Docs: Various docblock corrections and improvements.

See #51800

Built from https://develop.svn.wordpress.org/trunk@50395


git-svn-id: http://core.svn.wordpress.org/trunk@50006 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/load.php

@@ -417,6 +417,24 @@ function wp_debug_mode() {
 	 * constants to not be checked and the default PHP values for errors
 	 * will be used unless you take care to update them yourself.
 	 *
+	 * To use this filter you must define a `$wp_filter` global before
+	 * WordPress loads, usually in `wp-config.php`.
+	 *
+	 * Example:
+	 *
+	 *     $GLOBALS['wp_filter'] = array(
+	 *         'enable_wp_debug_mode_checks' => array(
+	 *             10 => array(
+	 *                 array(
+	 *                     'accepted_args' => 0,
+	 *                     'function'      => function() {
+	 *                         return false;
+	 *                     },
+	 *                 ),
+	 *             ),
+	 *         ),
+	 *     );
+	 *
 	 * @since 4.6.0
 	 *
 	 * @param bool $enable_debug_mode Whether to enable debug mode checks to occur. Default true.