Update docs-publish.yml

.github/workflows/docs-publish.yml

@@ -24,5 +24,5 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: pip install mkdocs-material mkdocs-autorefs mkdocstrings mkdocs-gen-files mkdocs-literate-nav mkdocs-section-index
+      - run: pip install mkdocs-material mkdocs-autorefs mkdocstrings mkdocs-gen-files mkdocs-literate-nav mkdocs-section-index pip install mkdocstrings-python
       - run: mkdocs gh-deploy --force