doc: use kbd element in readline doc

doc/api/readline.md

@@ -59,9 +59,11 @@ The `'close'` event is emitted when one of the following occur:
 * The `rl.close()` method is called and the `readline.Interface` instance has
   relinquished control over the `input` and `output` streams;
 * The `input` stream receives its `'end'` event;
-* The `input` stream receives `<ctrl>-D` to signal end-of-transmission (EOT);
-* The `input` stream receives `<ctrl>-C` to signal `SIGINT` and there is no
-  `'SIGINT'` event listener registered on the `readline.Interface` instance.
+* The `input` stream receives <kbd>Ctrl</kbd>+<kbd>D</kbd> to signal
+  end-of-transmission (EOT);
+* The `input` stream receives <kbd>Ctrl</kbd>+<kbd>C</kbd> to signal `SIGINT`
+  and there is no `'SIGINT'` event listener registered on the
+  `readline.Interface` instance.
 
 The listener function is called without passing any arguments.
 
@@ -126,8 +128,8 @@ added: v0.7.5
 -->
 
 The `'SIGCONT'` event is emitted when a Node.js process previously moved into
-the background using `<ctrl>-Z` (i.e. `SIGTSTP`) is then brought back to the
-foreground using fg(1p).
+the background using <kbd>Ctrl</kbd>+<kbd>Z</kbd> (i.e. `SIGTSTP`) is then
+brought back to the foreground using fg(1p).
 
 If the `input` stream was paused *before* the `SIGTSTP` request, this event will
 not be emitted.
@@ -149,9 +151,9 @@ added: v0.3.0
 -->
 
 The `'SIGINT'` event is emitted whenever the `input` stream receives a
-`<ctrl>-C` input, known typically as `SIGINT`. If there are no `'SIGINT'` event
-listeners registered when the `input` stream receives a `SIGINT`, the `'pause'`
-event will be emitted.
+<kbd>Ctrl+C</kbd> input, known typically as `SIGINT`. If there are no `'SIGINT'`
+event listeners registered when the `input` stream receives a `SIGINT`, the
+`'pause'` event will be emitted.
 
 The listener function is invoked without passing any arguments.
 
@@ -168,10 +170,10 @@ rl.on('SIGINT', () => {
 added: v0.7.5
 -->
 
-The `'SIGTSTP'` event is emitted when the `input` stream receives a `<ctrl>-Z`
-input, typically known as `SIGTSTP`. If there are no `'SIGTSTP'` event listeners
-registered when the `input` stream receives a `SIGTSTP`, the Node.js process
-will be sent to the background.
+The `'SIGTSTP'` event is emitted when the `input` stream receives a
+<kbd>Ctrl</kbd>+<kbd>Z</kbd> input, typically known as `SIGTSTP`. If there are
+no `'SIGTSTP'` event listeners registered when the `input` stream receives a
+`SIGTSTP`, the Node.js process will be sent to the background.
 
 When the program is resumed using fg(1p), the `'pause'` and `'SIGCONT'` events
 will be emitted. These can be used to resume the `input` stream.
@@ -288,9 +290,9 @@ added: v0.1.98
 
 * `data` {string}
 * `key` {Object}
-  * `ctrl` {boolean} `true` to indicate the `<ctrl>` key.
-  * `meta` {boolean} `true` to indicate the `<Meta>` key.
-  * `shift` {boolean} `true` to indicate the `<Shift>` key.
+  * `ctrl` {boolean} `true` to indicate the <kbd>Ctrl</kbd> key.
+  * `meta` {boolean} `true` to indicate the <kbd>Meta</kbd> key.
+  * `shift` {boolean} `true` to indicate the <kbd>Shift</kbd> key.
   * `name` {string} The name of the a key.
 
 The `rl.write()` method will write either `data` or a key sequence identified
@@ -308,7 +310,7 @@ If the `readline.Interface` was created with `output` set to `null` or
 
 ```js
 rl.write('Delete this!');
-// Simulate Ctrl+u to delete the line written previously
+// Simulate Ctrl+U to delete the line written previously
 rl.write(null, { ctrl: true, name: 'u' });
 ```
 
@@ -751,117 +753,117 @@ const { createInterface } = require('readline');
     <th>Notes</th>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>shift</code> + <code>backspace</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>Shift</kbd>+<kbd>Backspace</kbd></td>
     <td>Delete line left</td>
     <td>Doesn't work on Linux, Mac and Windows</td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>shift</code> + <code>delete</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>Shift</kbd>+<kbd>Delete</kbd></td>
     <td>Delete line right</td>
     <td>Doesn't work on Mac</td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>c</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>C</kbd></td>
     <td>Emit <code>SIGINT</code> or close the readline instance</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>h</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>H</kbd></td>
     <td>Delete left</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>d</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>D</kbd></td>
     <td>Delete right or close the readline instance in case the current line is empty / EOF</td>
     <td>Doesn't work on Windows</td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>u</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>U</kbd></td>
     <td>Delete from the current position to the line start</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>k</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>K</kbd></td>
     <td>Delete from the current position to the end of line</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>a</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>A</kbd></td>
     <td>Go to start of line</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>e</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>E</kbd></td>
     <td>Go to to end of line</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>b</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>B</kbd></td>
     <td>Back one character</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>f</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>F</kbd></td>
     <td>Forward one character</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>l</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>L</kbd></td>
     <td>Clear screen</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>n</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>N</kbd></td>
     <td>Next history item</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>p</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>P</kbd></td>
     <td>Previous history item</td>
     <td></td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>z</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>Z</kbd></td>
     <td>Moves running process into background. Type
-    <code>fg</code> and press <code>enter</code>
+    <code>fg</code> and press <kbd>Enter</kbd>
     to return.</td>
     <td>Doesn't work on Windows</td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>w</code> or <code>ctrl</code>
-    + <code>backspace</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>W</kbd> or <kbd>Ctrl</kbd>
+   +<kbd>Backspace</kbd></td>
     <td>Delete backward to a word boundary</td>
-    <td><code>ctrl</code> + <code>backspace</code> Doesn't
+    <td><kbd>Ctrl</kbd>+<kbd>Backspace</kbd> Doesn't
     work on Linux, Mac and Windows</td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>delete</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>Delete</kbd></td>
     <td>Delete forward to a word boundary</td>
     <td>Doesn't work on Mac</td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>left</code> or
-    <code>meta</code> + <code>b</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>Left arrow</kbd> or
+    <kbd>Meta</kbd>+<kbd>B</kbd></td>
     <td>Word left</td>
-    <td><code>ctrl</code> + <code>left</code> Doesn't work
+    <td><kbd>Ctrl</kbd>+<kbd>Left arrow</kbd> Doesn't work
     on Mac</td>
   </tr>
   <tr>
-    <td><code>ctrl</code> + <code>right</code> or
-    <code>meta</code> + <code>f</code></td>
+    <td><kbd>Ctrl</kbd>+<kbd>Right arrow</kbd> or
+    <kbd>Meta</kbd>+<kbd>F</kbd></td>
     <td>Word right</td>
-    <td><code>ctrl</code> + <code>right</code> Doesn't work
+    <td><kbd>Ctrl</kbd>+<kbd>Right arrow</kbd> Doesn't work
     on Mac</td>
   </tr>
   <tr>
-    <td><code>meta</code> + <code>d</code> or <code>meta</code>
-    + <code>delete</code></td>
+    <td><kbd>Meta</kbd>+<kbd>D</kbd> or <kbd>Meta</kbd>
+   +<kbd>Delete</kbd></td>
     <td>Delete word right</td>
-    <td><code>meta</code> + <code>delete</code> Doesn't work
+    <td><kbd>Meta</kbd>+<kbd>Delete</kbd> Doesn't work
     on windows</td>
   </tr>
   <tr>
-    <td><code>meta</code> + <code>backspace</code></td>
+    <td><kbd>Meta</kbd>+<kbd>Backspace</kbd></td>
     <td>Delete word left</td>
     <td>Doesn't work on Mac</td>
   </tr>