(1) removed redundant '--config ${{env.BUILD_TYPE}}' from 'cmake --build build -config ${{env.BUILD_TYPE}}' for a sigle configuration generator Ninja.
(2) wrote comments before each 'cmake --build build' about '--config ${{env.BUILD_TYPE}}' redundancy.
(3) in test-install-cblas-lapacke-without-fortran-compiler job, addded 'env' field 'BUILD_TYPE: Release' to make it consistent with other jobs in the script.