Updated the parameter comments

htdocs/core/lib/resource.lib.php

@@ -150,9 +150,9 @@ function resource_admin_prepare_head()
 /**
  * Returns the resources marked "busy" and assigned to an event during the specified time frame.
  * You can specify an array of resources and the function will return the overlap of the two.
- * @param string $dateStart
- * @param string $dateEnd
- * @param int[] $resource_ids
+ * @param string $dateStart the lower bound of the selector
+ * @param string $dateEnd the upper bound of the selector
+ * @param int[] $resource_ids the ids the request should filter by
  * @return array[]
  */
 function getBusyResourcesInPeriod(string $dateStart, string $dateEnd, array $resource_ids = array()) : array