✨(api) allow updating link configuration for a document

We open a specific endpoint to update documents link configuration
because it makes it more secure and simple to limit access rights
to administrators/owners whereas other document fields like title
and content can be edited by anonymous or authenticated users with
much less access rights.

src/backend/core/models.py

@@ -512,6 +512,7 @@ class Document(BaseModel):
         return {
             "attachment_upload": is_owner_or_admin or is_editor,
             "destroy": RoleChoices.OWNER in roles,
+            "link_configuration": is_owner_or_admin,
             "manage_accesses": is_owner_or_admin,
             "partial_update": is_owner_or_admin or is_editor,
             "retrieve": can_get,