Update @brief description

compute/pzbuild.c

compute/pzgebrd_ge2gb.c

compute/pzgelqf.c

compute/pzgelqf_param.c

compute/pzgelqfrh.c

compute/pzgemm.c

compute/pzgeqrf.c

compute/pzgeqrf_param.c

compute/pzgeqrfrh.c

compute/pzgetrf_incpiv.c

compute/pzgetrf_nopiv.c

compute/pzhemm.c

compute/pzher2k.c

compute/pzherk.c

compute/pzhetrd_he2hb.c

compute/pzlacpy.c

compute/pzlag2c.c

compute/pzlange.c

compute/pzlanhe.c

compute/pzlansy.c