ari-stubs: Fix more local anchor references

Also allow CreateDocs job to be run manually with default branches.

(cherry picked from commit b7dae87d1d)

.github/workflows/CreateDocs.yml

@@ -5,6 +5,7 @@ on:
       branches:
         description: "JSON array of branches: ['18','20'] (no spaces)"
         required:    true
+        default: ${{ vars.WIKIDOCS_ENABLE }}
         type:        string
   schedule:
 #           Times are UTC