message: [doc] fix doc build cmake flags
  OTBR_DBUS is required for generating the dbus server docs.
diff: @@ -56,7 +56,7 @@ jobs:
  run: |
  mkdir build-doc
  cd build-doc
  - cmake -DBUILD_TESTING=OFF -DOTBR_DOC=ON ..
  + cmake -DBUILD_TESTING=OFF -DOTBR_DOC=ON -DOTBR_DBUS=ON ..
  make otbr-doc
  - name: Deploy
  uses: peaceiris/actions-gh-pages@v3
  