[MM-62398] Fix /api/v4/reports/users/export api docs (#29750)

api/v4/source/introduction.yaml

@@ -613,6 +613,7 @@ x-tagGroups:
       - permissions
       - exports
       - usage
+      - reports
 servers:
   - url: http://your-mattermost-url.com
   - url: https://your-mattermost-url.com

api/v4/source/reports.yaml

@@ -1,7 +1,7 @@
   /api/v4/reports/users:
     get:
       tags:
-        - users
+        - reports
       summary: Get a list of paged and sorted users for admin reporting purposes
       description: >
         Get a list of paged users for admin reporting purposes, based on provided parameters.
@@ -104,7 +104,7 @@
   /api/v4/reports/users/count:
     get:
       tags:
-        - users
+        - reports
       summary: Gets the full count of users that match the filter.
       description: >
         Get the full count of users admin reporting purposes, based on provided parameters.