Fix several instances of doubled words

One in an exception; the rest in docblocks.

src/Symfony/Bridge/Doctrine/DependencyInjection/AbstractDoctrineExtension.php

@@ -242,7 +242,7 @@ abstract class AbstractDoctrineExtension extends Extension
         if (!in_array($mappingConfig['type'], array('xml', 'yml', 'annotation', 'php', 'staticphp'))) {
             throw new \InvalidArgumentException(sprintf('Can only configure "xml", "yml", "annotation", "php" or '.
                 '"staticphp" through the DoctrineBundle. Use your own bundle to configure other metadata drivers. '.
-                'You can register them by adding a a new driver to the '.
+                'You can register them by adding a new driver to the '.
                 '"%s" service definition.', $this->getObjectManagerElementName($objectManagerName.'.metadata_driver')
             ));
         }

src/Symfony/Component/Console/Formatter/OutputFormatter.php

@@ -239,7 +239,7 @@ class OutputFormatter implements OutputFormatterInterface
      *
      * @param string $text Input text
      *
-     * @return string string Styled text
+     * @return string Styled text
      */
     private function applyCurrentStyle($text)
     {

src/Symfony/Component/HttpFoundation/Response.php

@@ -690,7 +690,7 @@ class Response
 
     /**
      * Returns the number of seconds after the time specified in the response's Date
-     * header when the the response should no longer be considered fresh.
+     * header when the response should no longer be considered fresh.
      *
      * First, it checks for a s-maxage directive, then a max-age directive, and then it falls
      * back on an expires header. It returns null when no maximum age can be established.

src/Symfony/Component/HttpKernel/HttpCache/Store.php

@@ -241,7 +241,7 @@ class Store implements StoreInterface
      * @param array  $env1 A Request HTTP header array
      * @param array  $env2 A Request HTTP header array
      *
-     * @return Boolean true if the the two environments match, false otherwise
+     * @return Boolean true if the two environments match, false otherwise
      */
     private function requestsMatch($vary, $env1, $env2)
     {