Fix ambiguity in docs branch checkout in docs workflow

.github/workflows/spectrumdevice-docs-pages.yml

@@ -29,7 +29,7 @@ jobs:
         git status
         git checkout ${{ github.ref_name }}
         git branch ${{ github.ref_name }}-branch
-        git checkout docs
+        git switch docs
         git status
         git rebase ${{ github.ref_name }}-branch
         export SPECTRUMDEVICE_VERSION=${{ github.ref_name }}