[Panther] Add component documentation

Author: alexandre-daubois

.doctor-rst.yaml

@@ -111,4 +111,4 @@ whitelist:
         - '.. versionadded:: 3.6' # MonologBundle
         - '.. versionadded:: 3.8' # MonologBundle
         - '.. _`a feature to test applications using Mercure`: https://github.com/symfony/panther#creating-isolated-browsers-to-test-apps-using-mercure-or-websocket'
-        - '..  End to End Tests (E2E)'
+        - 'End to End Tests (E2E)'