[5.3] Improve inline comment for the "none-ID" behavior within the CR…

…ON Scheduler (#43817)

plugins/system/schedulerunner/src/Extension/ScheduleRunner.php

@@ -170,11 +170,10 @@ public function runLazyCron(EventInterface $e)
     }
 
     /**
-     * This method is responsible for the WebCron functionality of the Scheduler component.<br/>
+     * This method is responsible for the WebCron functionality of the Scheduler component.
      * Acting on a `com_ajax` call, this method can work in two ways:
-     * 1. If no Task ID is specified, it triggers the Scheduler to run the next task in
-     *   the task queue.
-     * 2. If a Task ID is specified, it fetches the task (if it exists) from the Scheduler API and executes it.<br/>
+     * 1. If no Task ID is specified, it triggers the Scheduler to run the next task in the task queue.
+     * 2. If a Task ID is specified, it fetches the task (if it exists) from the Scheduler API and executes it.
      *
      * URL query parameters:
      * - `hash` string (required)   Webcron hash (from the Scheduler component configuration).
@@ -202,8 +201,10 @@ public function runWebCron(Event $event)
             throw new \Exception($this->getApplication()->getLanguage()->_('JERROR_ALERTNOAUTHOR'), 403);
         }
 
+        // Check whether there is an id passed via the URL
         $id = (int) $this->getApplication()->getInput()->getInt('id', 0);
 
+        // When the id is set to 0 the next task is executed
         $task = $this->runScheduler($id);
 
         if (!empty($task) && !empty($task->getContent()['exception'])) {