Add variable type for sync_category_tag_slugs() parameters.

props tillkruess.
fixes #30718.
Built from https://develop.svn.wordpress.org/trunk@31113


git-svn-id: http://core.svn.wordpress.org/trunk@31094 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/ms.php

@@ -587,10 +587,10 @@ function format_code_lang( $code = '' ) {
  *
  * @since 3.0.0
  *
- * @param $term     The term.
- * @param $taxonomy The taxonomy for $term. Should be 'category' or 'post_tag', as these are
- *                  the only taxonomies which are processed by this function; anything else
- *                  will be returned untouched.
+ * @param object $term     The term.
+ * @param string $taxonomy The taxonomy for $term. Should be 'category' or 'post_tag', as these are
+ *                         the only taxonomies which are processed by this function; anything else
+ *                         will be returned untouched.
  * @return object|array Returns `$term`, after filtering the 'slug' field with {@see sanitize_title()}
  *                      if $taxonomy is 'category' or 'post_tag'.
  */