errors in compute the peak performance in benchark/gemm.c

Is here a type error in compute the peak performance of gemm in benchmark/gemm.c


```
Line 240      

 timeg = time1/loops;
    fprintf(stderr,
      " %10.2f MFlops %10.6f sec\n",
      COMPSIZE * COMPSIZE * 2. * (double)m * (double)m * (double)n / timeg * 1.e-6, time1);
```

I think here it should be 2. * (double)m * (double)n * (double) k, so one of the 'm' should be k.