Fix copy&pasted redirection in automatically built docs.

Author: adamreichold

.github/workflows/doc.yml

@@ -11,9 +11,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Build the doc
-        run: |
-          cargo doc --all-features --no-deps
-          echo "<meta http-equiv=refresh content=0;url=pyo3/index.html>" > target/doc/index.html
+        run: cargo doc --all-features --no-deps
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3.7.0-8