update remaining GitHub repository names

Author: xabbuh

components/asset/introduction.rst

@@ -45,7 +45,7 @@ Installation
 You can install the component in two different ways:
 
 * :doc:`Install it via Composer </components/using_components>` (``symfony/asset`` on `Packagist`_);
-* Use the official Git repository (https://github.com/symfony/Asset).
+* Use the official Git repository (https://github.com/symfony/asset).
 
 Usage
 -----

components/expression_language/caching.rst

@@ -70,5 +70,5 @@ Both ``evaluate()`` and ``compile()`` can handle ``ParsedExpression`` and
 
     var_dump($language->evaluate($expression)); // prints 5
 
-.. _DoctrineBridge: https://github.com/symfony/DoctrineBridge
+.. _DoctrineBridge: https://github.com/symfony/doctrine-bridge
 .. _`doctrine cache library`: http://docs.doctrine-project.org/projects/doctrine-common/en/latest/reference/caching.html