oops broke the docs job

Author: DetachHead

.github/workflows/docs.yaml

@@ -31,7 +31,7 @@ jobs:
         uses: actions/configure-pages@v4
       - run: cp README.md docs/README.md
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v4
+        uses: actions/upload-pages-artifact@v3
         with:
           path: 'docs'
       - name: Deploy to GitHub Pages