[SPARK-45538][PYTHON][CONNECT]pyspark connect overwrite_partitions bug

Author: xieshuaihu

python/pyspark/sql/connect/plan.py

@@ -1743,7 +1743,7 @@ def command(self, session: "SparkConnectClient") -> proto.Command:
                 plan.write_operation_v2.mode = proto.WriteOperationV2.Mode.MODE_CREATE
             elif wm == "overwrite":
                 plan.write_operation_v2.mode = proto.WriteOperationV2.Mode.MODE_OVERWRITE
-            elif wm == "overwrite_partition":
+            elif wm == "overwrite_partitions":
                 plan.write_operation_v2.mode = proto.WriteOperationV2.Mode.MODE_OVERWRITE_PARTITIONS
             elif wm == "append":
                 plan.write_operation_v2.mode = proto.WriteOperationV2.Mode.MODE_APPEND