docs: ignore 404 errors from https://pyo3.rs (#4967)

* docs: ignore 404 errors from https://pyo3.rs

* Update .github/workflows/gh-pages.yml

Co-authored-by: David Hewitt <mail@davidhewitt.dev>

---------

Co-authored-by: David Hewitt <mail@davidhewitt.dev>

Author: ngoldbaum

.github/workflows/gh-pages.yml

@@ -42,7 +42,7 @@ jobs:
       - name: Build the guide
         run: |
           python -m pip install --upgrade pip && pip install nox
-          nox -s check-guide
+          nox -s ${{ github.event_name == 'release' && 'build-guide' || 'check-guide' }}
         env:
           PYO3_VERSION_TAG: ${{ steps.prepare_tag.outputs.tag_name }}