Docs: Fix apostrophe usage in wp-admin/includes/class-wp-list-table.php.

Props truptikanzariya, mukesh27.
Fixes 61490.
See 60699.




git-svn-id: https://develop.svn.wordpress.org/trunk@58560 602fd350-edb4-49c9-b593-d223f7449a82

Author: audrasjb

src/wp-admin/includes/class-wp-list-table.php

@@ -995,10 +995,10 @@ protected function get_items_per_page( $option, $default_value = 20 ) {
 		 *  - `edit_comments_per_page`
 		 *  - `sites_network_per_page`
 		 *  - `site_themes_network_per_page`
-		 *  - `themes_network_per_page'`
+		 *  - `themes_network_per_page`
 		 *  - `users_network_per_page`
 		 *  - `edit_post_per_page`
-		 *  - `edit_page_per_page'`
+		 *  - `edit_page_per_page`
 		 *  - `edit_{$post_type}_per_page`
 		 *  - `edit_post_tag_per_page`
 		 *  - `edit_category_per_page`