Fixed typos

src/Silex/Application/SwiftmailerTrait.php

@@ -21,7 +21,7 @@ trait SwiftmailerTrait
     /**
      * Sends an email.
      *
-     * @param \Swift_Message $message A \Swift_Message intance
+     * @param \Swift_Message $message A \Swift_Message instance
      */
     public function mail(\Swift_Message $message)
     {

src/Silex/Provider/DoctrineServiceProvider.php

@@ -64,7 +64,7 @@ class DoctrineServiceProvider implements ServiceProviderInterface
             $dbs = new \Pimple();
             foreach ($app['dbs.options'] as $name => $options) {
                 if ($app['dbs.default'] === $name) {
-                    // we use shortcuts here in case the default has been overriden
+                    // we use shortcuts here in case the default has been overridden
                     $config = $app['db.config'];
                     $manager = $app['db.event_manager'];
                 } else {