Fix exp script

bin/mc-2/exp

@@ -37,7 +37,7 @@ Usage: $script [-v] <programs> <pinning> <nodes> <use_perf> <autogroup> <repeat>
      <repeat>       the number of time to run the application for each parameter combinations
 
 Run volrend on 64 cores with and without pinning one time each:
-     >> $0 volrend "cores none" 8 n n n 1
+     >> $0 volrend "cores none" 8 n n 1
 Run volrend and wordcount
 with pinning and without pinning,
 on 2,3,4,5,6,7,8 nodes
@@ -291,7 +291,7 @@ while [[ $1 == -* ]]; do
     esac
 done
 
-if [[ $# != 7 ]]; then
+if [[ $# != 6 ]]; then
     usage
     exit 125
 fi