ci: permission too small

Author: guitarrapc

.github/workflows/build-docs.yaml

@@ -9,7 +9,7 @@ jobs:
   run-docfx:
     if: ${{ !(contains(github.event.head_commit.message, '[skip ci]') || contains(github.event.head_commit.message, '[ci skip]')) }}
     permissions:
-      contents: read
+      contents: write
       pages: write
     runs-on: ubuntu-24.04
     timeout-minutes: 10