include commit id in project name

Author: kinkie

.github/workflows/gen-docs.yaml

@@ -67,6 +67,7 @@ jobs:
       - name: Build programming guide
         if: steps.check_squid_updates.outputs.had_update == 'true'
         run: |
+          sed -i~ 's/PROJECT_NUMBER           = .*/& (commit ${{ steps.check_squid_updates.outputs.current }})/' doxyfile
           doxygen doxyfile
 
       - name: update self