adds code comment to clarify message will be printed raw

core/ViewDataTable/Config.php

@@ -466,6 +466,8 @@ class Config
      * Message to show if not data is available for the report
      * Defaults to `CoreHome_ThereIsNoDataForThisReport` if not set
      *
+     * Attention: Message will be printed raw. Don't forget to escape where needed!
+     *
      * @var string
      */
     public $no_data_message = '';