address comments

doc/api/readline.md

@@ -628,12 +628,12 @@ the best compatibility if it defines an `output.columns` property and emits
 a `'resize'` event on the `output` if or when the columns ever change
 ([`process.stdout`][] does this automatically when it is a TTY).
 
-When creating a `readline.Interface` using `stdin` as input stream, the program
+When creating a `readline.Interface` using `stdin` as input, the program
 will not terminate until it receives `EOF` (<kbd>Ctrl</kbd>+<kbd>D</kbd> on
 Linux/macOS, <kbd>Ctrl</kbd>+<kbd>Z</kbd> followed by <kbd>Return</kbd> on
 Windows).
 If you want your application to exit without waiting for user input, you can
-`unref` the standard input stream:
+[`unref`][] the standard input stream:
 
 ```js
 process.stdin.unref();
@@ -974,3 +974,4 @@ const { createInterface } = require('readline');
 [`process.stdout`]: process.md#process_process_stdout
 [`rl.close()`]: #readline_rl_close
 [reading files]: #readline_example_read_file_stream_line_by_line
+[`unref`]: net.md#net_socket_unref