doc: refine when file is undefined in test events

PR-URL: #48451
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>

Author: MoLow

doc/api/test.md

@@ -1398,7 +1398,7 @@ Emitted when code coverage is enabled and all tests have completed.
 
 * `data` {Object}
   * `file` {string|undefined} The path of the test file,
-    undefined if test is not ran through a file.
+    `undefined` if test was run through the REPL.
   * `name` {string} The test name.
   * `nesting` {number} The nesting level of the test.
 
@@ -1408,7 +1408,7 @@ Emitted when a test is dequeued, right before it is executed.
 
 * `data` {Object}
   * `file` {string|undefined} The path of the test file,
-    undefined if test is not ran through a file.
+    `undefined` if test was run through the REPL.
   * `message` {string} The diagnostic message.
   * `nesting` {number} The nesting level of the test.
 
@@ -1418,7 +1418,7 @@ Emitted when [`context.diagnostic`][] is called.
 
 * `data` {Object}
   * `file` {string|undefined} The path of the test file,
-    undefined if test is not ran through a file.
+    `undefined` if test was run through the REPL.
   * `name` {string} The test name.
   * `nesting` {number} The nesting level of the test.
 
@@ -1431,7 +1431,7 @@ Emitted when a test is enqueued for execution.
     * `duration` {number} The duration of the test in milliseconds.
     * `error` {Error} The error thrown by the test.
   * `file` {string|undefined} The path of the test file,
-    undefined if test is not ran through a file.
+    `undefined` if test was run through the REPL.
   * `name` {string} The test name.
   * `nesting` {number} The nesting level of the test.
   * `testNumber` {number} The ordinal number of the test.
@@ -1446,7 +1446,7 @@ Emitted when a test fails.
   * `details` {Object} Additional execution metadata.
     * `duration` {number} The duration of the test in milliseconds.
   * `file` {string|undefined} The path of the test file,
-    undefined if test is not ran through a file.
+    `undefined` if test was run through the REPL.
   * `name` {string} The test name.
   * `nesting` {number} The nesting level of the test.
   * `testNumber` {number} The ordinal number of the test.
@@ -1459,7 +1459,7 @@ Emitted when a test passes.
 
 * `data` {Object}
   * `file` {string|undefined} The path of the test file,
-    undefined if test is not ran through a file.
+    `undefined` if test was run through the REPL.
   * `nesting` {number} The nesting level of the test.
   * `count` {number} The number of subtests that have ran.
 
@@ -1469,7 +1469,7 @@ Emitted when all subtests have completed for a given test.
 
 * `data` {Object}
   * `file` {string|undefined} The path of the test file,
-    undefined if test is not ran through a file.
+    `undefined` if test was run through the REPL.
   * `name` {string} The test name.
   * `nesting` {number} The nesting level of the test.