[skip ci]Refine comments in test partition (#9704)

Signed-off-by: Nyanliang567 <yanliang.qiao@zilliz.com>

tests/python_client/testcases/test_partition_20.py

@@ -290,7 +290,7 @@ class TestPartitionParams(TestcaseBase):
                                       cf.gen_default_tuple_data(10)])
     def test_partition_insert(self, data):
         """
-        target: verify insert multi entities
+        target: verify insert entities multiple times
         method: 1. create a collection and a partition
                 2. partition.insert(data)
                 3. insert data again