[skip ci] Fix go fmt error (#13538)

Signed-off-by: Ndragondriver <jiquan.long@zilliz.com>

internal/distributed/proxy/service.go

@@ -383,7 +383,7 @@ func (s *Server) GetPartitionStatistics(ctx context.Context, request *milvuspb.G
 	return s.proxy.GetPartitionStatistics(ctx, request)
 }
 
-// ShowPartitions notifies Proxy to show the partitions 
+// ShowPartitions notifies Proxy to show the partitions
 func (s *Server) ShowPartitions(ctx context.Context, request *milvuspb.ShowPartitionsRequest) (*milvuspb.ShowPartitionsResponse, error) {
 	return s.proxy.ShowPartitions(ctx, request)
 }