ci: publish storybook under docs/storybook so gh-pages serves it

Author: tonyolsson

.github/workflows/deploy-storybook.yml

@@ -34,6 +34,6 @@ jobs:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_branch: gh-pages
           publish_dir: ./examples/storybook-static
-          destination_dir: storybook
+          destination_dir: docs/storybook
           keep_files: true
           enable_jekyll: false