Fix typo on method name

artisan.md

@@ -303,6 +303,6 @@ Sometimes you may wish to call other commands from an existing Artisan command.
 
 If you would like to call another console command and suppress all of its output, you may use the `callSilent` method. The `callSilent` method has the same signature as the `call` method:
 
-	$this->call('email:send', [
+	$this->callSilent('email:send', [
 		'user' => 1, '--queue' => 'default'
 	]);