Polish for readibility and respect writing conventions

doc/user/chapters/using.org

lapack_api/include/chameleon/chameleon_zlapack.h

lapack_api/src/lapack_api_common.c

lapack_api/src/lapack_zgemm.c

lapack_api/src/lapack_zhemm.c

lapack_api/src/lapack_zher2k.c

lapack_api/src/lapack_zherk.c

lapack_api/src/lapack_zlauum.c

lapack_api/src/lapack_zsymm.c

lapack_api/src/lapack_zsyr2k.c

lapack_api/src/lapack_zsyrk.c

lapack_api/src/lapack_ztrmm.c

lapack_api/src/lapack_ztrsm.c