Clarify priority param description

Author: westonruter

src/wp-includes/class-wp-hook.php

@@ -229,7 +229,8 @@ public function remove_filter( $hook_name, $callback, $priority ) {
 	 * @param callable|string|array|false $callback  Optional. The callback to check for.
 	 *                                               This method can be called unconditionally to speculatively check
 	 *                                               a callback that may or may not exist. Default false.
-	 * @param int|false                   $priority  Whether to check for a filter at a specific priority.
+	 * @param int|false                   $priority  Optional. The specific priority at which to check for the callback.
+	 *                                               Default false.
 	 * @return bool|int If `$callback` is omitted, returns boolean for whether the hook has
 	 *                  anything registered. When checking a specific function, the priority
 	 *                  of that hook is returned, or false if the function is not attached.

src/wp-includes/plugin.php

@@ -275,7 +275,8 @@ function apply_filters_ref_array( $hook_name, $args ) {
  * @param callable|string|array|false $callback  Optional. The callback to check for.
  *                                               This function can be called unconditionally to speculatively check
  *                                               a callback that may or may not exist. Default false.
- * @param int|false                   $priority  Whether to check for a filter at a specific priority.
+ * @param int|false                   $priority  Optional. The specific priority at which to check for the callback.
+ *                                               Default false.
  * @return bool|int If `$callback` is omitted, returns boolean for whether the hook has
  *                  anything registered. When checking a specific function, the priority
  *                  of that hook is returned, or false if the function is not attached.
@@ -586,7 +587,8 @@ function do_action_ref_array( $hook_name, $args ) {
  * @param callable|string|array|false $callback  Optional. The callback to check for.
  *                                               This function can be called unconditionally to speculatively check
  *                                               a callback that may or may not exist. Default false.
- * @param int|false                   $priority  Whether to check for a filter at a specific priority.
+ * @param int|false                   $priority  Optional. The specific priority at which to check for the callback.
+ *                                               Default false.
  * @return bool|int If `$callback` is omitted, returns boolean for whether the hook has
  *                  anything registered. When checking a specific function, the priority
  *                  of that hook is returned, or false if the function is not attached.