Docs: Add examples of possible names for various hooks whose name contains a dynamic portion.

This provides greater discoverability of such hooks in search results on the Code Reference site as well as increased clarity when reading the source.

See #50734, #52628


git-svn-id: https://develop.svn.wordpress.org/trunk@50505 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/media.php

@@ -3454,6 +3454,11 @@ function adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false )
 	 * The dynamic portion of the hook name, `$adjacent`, refers to the type of adjacency,
 	 * either 'next', or 'previous'.
 	 *
+	 * Possible hook names include:
+	 *
+	 *  - `next_image_link`
+	 *  - `previous_image_link`
+	 *
 	 * @since 3.5.0
 	 *
 	 * @param string $output        Adjacent image HTML markup.