[skip ci] Update comments of parser on benchmark (#13484)

Signed-off-by: wangting0128 <ting.wang@zilliz.com>

tests/benchmark/milvus_benchmark/parser.py

@@ -4,7 +4,7 @@ logger = logging.getLogger("milvus_benchmark.parser")
 
 
 def operations_parser(operations):
-    """ get the type and params of test """
+    """ Get the type and params of test """
     if not operations:
         raise Exception("No operations in suite defined")
     for run_type, run_params in operations.items():