Update ghpage.yml

Author: nexus-uw

.github/workflows/ghpage.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v7
+    - uses: actions/checkout@v6
     # - name: Check Spelling
     #   uses: check-spelling/check-spelling@v0.0.22
     #   with: