fix: test relative link

Author: c12simple

admin-guide/1_quick_start/5_adding_collaboration_tools/index.md

@@ -1,4 +1,4 @@
 Collaborating on Office Documents is a great addition to Content Collaboration Platform like Pydio Cells. We provide the following adapters for third-party services that will allow in-app collaborative edition of such documents :
 
-- [[Ent] Only Office](ent-only-office/)
-- [Collabora Online](/../cells-v4/admin-guide/quick-start/add-collaboration-tools/collabora-online/)
+- [[Ent] Only Office](../ent-only-office/)
+- [Collabora Online](../../cells-v4/admin-guide/quick-start/add-collaboration-tools/collabora-online/)