Use docs/ for documentation path in sanity check

This has changed since we migrated our documentation to readthedocs.

.github/workflows/qa.yaml

@@ -30,6 +30,7 @@ jobs:
         with:
           golangci-lint-configfile: ".golangci-ci.yaml"
           tools-directory: "tools"
+          generate-diff-paths-to-ignore: po/* docs/**/*.md README.md
       - name: C code formatting
         uses: jidicula/[email protected]
         with: