Tidy links

Author: dondonz

versioned_docs/version-v16/execution.md

@@ -455,7 +455,7 @@ as your execution strategy as it has the support for the reactive-streams APIs.
 
 See http://www.reactive-streams.org/ for more information on the reactive ``Publisher`` and ``Subscriber`` interfaces.
 
-Also see the page on [subscriptions](../subscriptions) for more details on how to write a subscription based graphql service.
+Also see the page on [subscriptions](subscriptions.md) for more details on how to write a subscription based graphql service.
 
 
 ## Query Caching

versioned_docs/version-v17/execution.md

@@ -455,7 +455,7 @@ as your execution strategy as it has the support for the reactive-streams APIs.
 
 See http://www.reactive-streams.org/ for more information on the reactive ``Publisher`` and ``Subscriber`` interfaces.
 
-Also see the page on [subscriptions](../subscriptions) for more details on how to write a subscription based graphql service.
+Also see the page on [subscriptions](subscriptions.md) for more details on how to write a subscription based graphql service.
 
 
 ## Query Caching