Bug - Fix Bug : fix bug of error param operations to operation in rccl-bw of hpe config (#190)

**Description**
fix bug of error param opterations of rccl-bw in hpe MI100 config

**Major Revision**
- operations->operation

superbench/config/amd_mi100_hpe.yaml

@@ -50,7 +50,7 @@ superbench:
         minbytes: 32M
         iters: 50
         ngpus: 1
-        operations: allreduce
+        operation: allreduce
     mem-bw:
       <<: *default_local_mode
     gemm-flops: