Update EventEmitterTrait.php

Author: Charlotte Dunois

src/EventEmitterTrait.php

@@ -137,7 +137,8 @@ function listeners(?string $event = null) {
     /**
      * Emits an event, catching all exceptions and emitting an error event for these exceptions.
      * @param string  $event
-     * @param mixed   $arguments
+     * @param mixed   ...$arguments
+     * @return void
      * @throws \Throwable                 Any Throwable, Exception, Error or ErrorException by the listener.
      * @throws \Exception                 Any Throwable, Exception, Error or ErrorException by the listener.
      * @throws \Error                     Any Throwable, Exception, Error or ErrorException by the listener.