minor #5777 Update links (thewilkybarkid)

This PR was submitted for the 2.8 branch but it was merged into the 2.3 branch instead (closes #5777).

Discussion
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Update links

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.3
| Fixed tickets |

Commits
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6d9b716 Update links

Author: xabbuh

create_framework/dependency-injection.rst

@@ -238,6 +238,6 @@ micro-framework, and especially its `Application`_ class.
 
 Have fun!
 
-.. _`Pimple`: https://github.com/fabpot/Pimple
+.. _`Pimple`: https://github.com/silexphp/Pimple
 .. _`Silex`: http://silex.sensiolabs.org/
-.. _`Application`: https://github.com/fabpot/Silex/blob/master/src/Silex/Application.php
+.. _`Application`: https://github.com/silexphp/Silex/blob/master/src/Silex/Application.php