Specify some parameters to the add-and-commit action (documentcloud#188 documentcloud#238)

This keeps things more tightly in control and also fixes a parsing
issue.

Author: jgonggrijp

.github/workflows/cd.yml

@@ -45,6 +45,8 @@ jobs:
     - name: Commit the build output
       uses: EndBug/add-and-commit@v5
       with:
+        add: dist/ index.html
+        message: Autocommit build output (continuous deployment)
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     - name: Publish to NPM