Fix CI doc release

Author: spencerwooo

.github/workflows/main.yml

@@ -27,6 +27,14 @@ jobs:
         file: ${{ matrix.template }}.zip
         asset_name: ${{ matrix.template }}.zip
         tag: ${{ github.ref }}
+
+  release-doc:
+    name: Release documentation
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
     - name: Upload PDF documentation to release
       uses: svenstaro/[email protected]
       with: