use consistent placeholder comments in yaml, php and xml

Author: OskarStark

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(

deployment/fortrabbit.rst

@@ -126,12 +126,12 @@ Make sure this file is imported into the main config file:
             - { resource: config.yml }
             - { resource: config_prod_secrets.php }
 
-        # ..
+        # ...
         framework:
             session:
                 # set handler_id to null to use default session handler from php.ini (memcached)
                 handler_id:  ~
-        # ..
+        # ...
 
     .. code-block:: xml
 
@@ -148,9 +148,9 @@ Make sure this file is imported into the main config file:
                 <import resource="config_prod_secrets.php"/>
             </imports>
 
-            <!-- .. -->
+            <!-- ... -->
             <framework:config>
-                <!-- .. -->
+                <!-- ... -->
                 <framework:session handler-id="null"/>
             </framework:config>
         </container>

routing.rst

@@ -724,7 +724,7 @@ This happens when your controller method has an argument (e.g. ``$slug``)::
 
     public function showAction($slug)
     {
-        // ..
+        // ...
     }
 
 But your route path does *not* have a ``{slug}`` wildcard (e.g. it is ``/blog/show``).

security/api_key_authentication.rst

@@ -457,7 +457,7 @@ configuration or set it to ``false``:
 
         // app/config/security.php
 
-        // ..
+        // ...
         $container->loadFromExtension('security', [
             'firewalls' => [
                 'secured_area'       => [

security/guard_authentication.rst

@@ -322,7 +322,7 @@ Finally, configure your ``firewalls`` key in ``security.yml`` to use this authen
 
         // app/config/security.php
 
-        // ..
+        // ...
         use AppBundle\Security\TokenAuthenticator;
 
         $container->loadFromExtension('security', [