Clarify idle and poll method PHPDoc comments

Author: stevebauman

src/FolderInterface.php

@@ -42,12 +42,12 @@ public function is(FolderInterface $folder): bool;
     public function messages(): MessageQueryInterface;
 
     /**
-     * Begin idling on the current folder.
+     * Begin idling on the current folder for the given timeout in seconds.
      */
     public function idle(callable $callback, ?callable $query = null, callable|int $timeout = 300): void;
 
     /**
-     * Begin polling for new messages at a given frequency.
+     * Begin polling for new messages at the given frequency in seconds.
      */
     public function poll(callable $callback, ?callable $query = null, callable|int $frequency = 60): void;