Crosslink MR approvals API page

doc/api/merge_request_approvals.md

@@ -7,7 +7,9 @@ type: reference, api
 
 # Merge request approvals API **(PREMIUM)**
 
-Configuration for approvals on all Merge Requests (MR) in the project. Must be authenticated for all endpoints.
+Configuration for
+[approvals on all merge requests](../user/project/merge_requests/merge_request_approvals.md)
+in the project. Must be authenticated for all endpoints.
 
 ## Project-level MR approvals
 

doc/user/project/merge_requests/merge_request_approvals.md

@@ -13,6 +13,7 @@ type: reference, concepts
 Code review is an essential practice of every successful project. Approving a
 merge request is an important part of the review
 process, as it clearly communicates the ability to merge the change.
+A [merge request approvals API](../../../api/merge_request_approvals.md) is also available.
 
 ## Optional Approvals