Docs: Add a missing DocBlock summary and $action parameter description for wp_ajax_delete_page().

Props abhijitrakas.
Fixes #44206.


git-svn-id: https://develop.svn.wordpress.org/trunk@44335 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/ajax-actions.php

@@ -800,9 +800,11 @@ function wp_ajax_untrash_post( $action ) {
 }
 
 /**
+ * Ajax handler to delete a page.
+ *
  * @since 3.1.0
  *
- * @param string $action
+ * @param string $action Action to perform.
  */
 function wp_ajax_delete_page( $action ) {
 	if ( empty( $action ) ) {