rename build dir - with feeling

Signed-off-by: Karl W. Schulz <karl.schulz@amd.com>

.github/workflows/docs-2.x.yml

@@ -37,7 +37,7 @@ jobs:
         run: |
           cd src/docs
           make html
-          mv _build 2.x
+          mv _build/html _build/2.x
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with: