Docs clarify API to share project to a group

doc/api/members.md

@@ -173,3 +173,7 @@ DELETE /projects/:id/members/:user_id
 curl --request DELETE --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/groups/:id/members/:user_id
 curl --request DELETE --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/projects/:id/members/:user_id
 ```
+
+## Give a group access to a project
+
+Look at [share project with group](projects.md#share-project-with-group)

doc/api/projects.md

@@ -1198,7 +1198,7 @@ POST /projects/:id/share
 | --------- | ---- | -------- | ----------- |
 | `id` | integer/string | yes | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) |
 | `group_id` | integer | yes | The ID of the group to share with |
-| `group_access` | integer | yes | The permissions level to grant the group |
+| `group_access` | integer | yes | The [permissions level](members.md) to grant the group |
 | `expires_at` | string | no | Share expiration date in ISO 8601 format: 2016-09-26 |
 
 ## Delete a shared project link within a group