Docs: Correct some documentation for wp_update_term().

See #49572.

git-svn-id: https://develop.svn.wordpress.org/trunk@48599 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/taxonomy.php

@@ -2138,7 +2138,7 @@ function wp_get_object_terms( $object_ids, $taxonomies, $args = array() ) {
  * 3. The 'term_id_filter' is evaluated.
  * 4. The term cache is cleaned.
  * 5. Several more actions are fired.
- * 6. An array is returned containing the term_id and term_taxonomy_id.
+ * 6. An array is returned containing the `term_id` and `term_taxonomy_id`.
  *
  * If the 'slug' argument is not empty, then it is checked to see if the term
  * is invalid. If it is not a valid, existing term, it is added and the term_id
@@ -2148,7 +2148,7 @@ function wp_get_object_terms( $object_ids, $taxonomies, $args = array() ) {
  * the term is inserted and the term_id will be given.
  *
  * Error handling:
- * If $taxonomy does not exist or $term is empty,
+ * If `$taxonomy` does not exist or `$term` is empty,
  * a WP_Error object will be returned.
  *
  * If the term already exists on the same hierarchical level,
@@ -2430,7 +2430,7 @@ function wp_insert_term( $term, $taxonomy, $args = array() ) {
 	 * @since 2.3.0
 	 *
 	 * @param int $term_id Term ID.
-	 * @param int $tt_id   Taxonomy term ID.
+	 * @param int $tt_id   Term taxonomy ID.
 	 */
 	$term_id = apply_filters( 'term_id_filter', $term_id, $tt_id );
 
@@ -2883,32 +2883,37 @@ function wp_unique_term_slug( $slug, $term ) {
 /**
  * Update term based on arguments provided.
  *
- * The $args will indiscriminately override all values with the same field name.
+ * The `$args` will indiscriminately override all values with the same field name.
  * Care must be taken to not override important information need to update or
  * update will fail (or perhaps create a new term, neither would be acceptable).
  *
  * Defaults will set 'alias_of', 'description', 'parent', and 'slug' if not
- * defined in $args already.
+ * defined in `$args` already.
  *
- * 'alias_of' will create a term group, if it doesn't already exist, and update
+ * 'alias_of' will create a term group, if it doesn't already exist, and
- * it for the $term.
+ * update it for the `$term`.
  *
- * If the 'slug' argument in $args is missing, then the 'name' in $args will be
+ * If the 'slug' argument in `$args` is missing, then the 'name' will be used.
- * used. It should also be noted that if you set 'slug' and it isn't unique then
+ * If you set 'slug' and it isn't unique, then a WP_Error is returned.
- * a WP_Error will be passed back. If you don't pass any slug, then a unique one
+ * If you don't pass any slug, then a unique one will be created.
- * will be created for you.
- *
- * For what can be overrode in `$args`, check the term scheme can contain and stay
- * away from the term keys.
  *
  * @since 2.3.0
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  *
- * @param int          $term_id  The ID of the term
+ * @param int          $term_id  The ID of the term.
- * @param string       $taxonomy The context in which to relate the term to the object.
+ * @param string       $taxonomy The taxonomy of the term.
- * @param array|string $args     Optional. Array of get_terms() arguments. Default empty array.
+ * @param array|string $args {
- * @return array|WP_Error Returns Term ID and Taxonomy Term ID
+ *     Optional. Array or string of arguments for updating a term.
+ *
+ *     @type string $alias_of    Slug of the term to make this term an alias of.
+ *                               Default empty string. Accepts a term slug.
+ *     @type string $description The term description. Default empty string.
+ *     @type int    $parent      The id of the parent term. Default 0.
+ *     @type string $slug        The term slug to use. Default empty string.
+ * }
+ * @return array|WP_Error An array containing the `term_id` and `term_taxonomy_id`,
+ *                        WP_Error otherwise.
  */
 function wp_update_term( $term_id, $taxonomy, $args = array() ) {
 	global $wpdb;