Merge branch '4.2'

* 4.2:
  use consistent placeholder comments in yaml, php and xml

Author: javiereguiluz

create_framework/http_kernel_httpkernelinterface.rst

@@ -55,7 +55,7 @@ PHP; it implements ``HttpKernelInterface`` and wraps another
 
     // example.com/web/front.php
 
-    // ..
+    // ...
 
     $framework = new Simplex\Framework($dispatcher, $matcher, $controllerResolver, $argumentResolver);
     $framework = new HttpKernel\HttpCache\HttpCache(

routing.rst

@@ -906,7 +906,7 @@ This happens when your controller method has an argument (e.g. ``$slug``)::
 
     public function show($slug)
     {
-        // ..
+        // ...
     }
 
 But your route path does *not* have a ``{slug}`` wildcard (e.g. it is ``/blog/show``).

security/guard_authentication.rst

@@ -230,7 +230,7 @@ Finally, configure your ``firewalls`` key in ``security.yaml`` to use this authe
 
         // config/packages/security.php
 
-        // ..
+        // ...
         use App\Security\TokenAuthenticator;
 
         $container->loadFromExtension('security', [