Fix path to composite action

Author: alexslavr

.github/workflows/docgen.yml

@@ -1,6 +1,7 @@
 name: DocGen
 
 on:
+  pull_request:
   workflow_dispatch:
 
 jobs:
@@ -16,7 +17,7 @@ jobs:
             path: documentation
             ref: ${{ github.ref_name }}
 
-        - uses: ./.github/actions/setup-env
+        - uses: documentation/.github/actions/setup-env
 
         - name: Checkout DevExtreme
           uses: actions/checkout@v4