fix ubsan test
diff --git a/tools/internal_ci/linux/grpc_ubsan_on_foundry.sh b/tools/internal_ci/linux/grpc_ubsan_on_foundry.sh
index 49d06ab..c733a0a 100644
--- a/tools/internal_ci/linux/grpc_ubsan_on_foundry.sh
+++ b/tools/internal_ci/linux/grpc_ubsan_on_foundry.sh
@@ -60,8 +60,8 @@
   --action_env=BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1 \
   --extra_toolchains=@com_github_bazelbuild_bazeltoolchains//configs/ubuntu16_04_clang/1.0/bazel_0.13.0/cpp:cc-toolchain-clang-x86_64-default \
   --extra_execution_platforms=@com_github_bazelbuild_bazeltoolchains//configs/ubuntu16_04_clang/1.0:rbe_ubuntu1604 \
-  --runs_per_test_detects_flakes 
-  --runs_per_test=2
+  --runs_per_test_detects_flakes \
+  --runs_per_test=2 \
   -- //test/... || FAILED="true"
 
 # Sleep to let ResultStore finish writing results before querying