repository_configuration.md: Update doctrine doc to 2.18 (#3162)

Author: adriendupuis

docs/administration/configuration/repository_configuration.md

@@ -30,7 +30,7 @@ ibexa:
 
     It uses [Doctrine DBAL](https://www.doctrine-project.org/projects/doctrine-dbal/en/latest/) (Database Abstraction Layer).
     Database settings are supplied by [DoctrineBundle](https://github.com/doctrine/DoctrineBundle).
-    As such, you can refer to [DoctrineBundle's documentation](https://github.com/doctrine/DoctrineBundle/blob/2.7.x/Resources/doc/configuration.rst#doctrine-dbal-configuration).
+    As such, you can refer to [DoctrineBundle's documentation](https://github.com/doctrine/DoctrineBundle/blob/2.18.x/docs/en/configuration.rst#doctrine-dbal-configuration).
 
 If no repository is specified for a SiteAccess or SiteAccess group, the first repository defined under `ibexa.repositories` is used:
 
@@ -64,7 +64,7 @@ Invalid configuration causes problems for different parts of the system, for exa
 
 ### Entity manager
 
-If you use the [Doctrine entity manager](https://www.doctrine-project.org/projects/doctrine-orm/en/2.10/tutorials/getting-started.html#obtaining-the-entitymanager), you're unable to connect different SiteAccesses to different databases.
+If you use the [Doctrine entity manager](https://www.doctrine-project.org/projects/doctrine-orm/en/2.18/tutorials/getting-started.html#obtaining-the-entitymanager), you're unable to connect different SiteAccesses to different databases.
 
 To have this possibility, you need to use the SiteAccess-aware entity manager: `ibexa.doctrine.orm.entity_manager`.