message: Add submodule init in the worflow
diff: @@ -16,6 +16,7 @@ rm -rf data/points/COIL_database/lucky_cat.off_dist data/points/COIL_database/lu
  Checkin the modifications, build and test the version:
  ```bash
  +git submodule update --init
  mkdir build
  cd build
  cmake -DCGAL_DIR=/your/path/to/CGAL -DWITH_GUDHI_EXAMPLE=ON -DWITH_GUDHI_BENCHMARK=ON -DUSER_VERSION_DIR=gudhi.@GUDHI_VERSION@ -DPython_ADDITIONAL_VERSIONS=3 ..
  