Automated change: Fix sanity tests

tools/run_tests/xds_k8s_test_driver/tests/url_map/affinity_test.py

diff --git a/tools/run_tests/xds_k8s_test_driver/tests/url_map/affinity_test.py b/tools/run_tests/xds_k8s_test_driver/tests/url_map/affinity_test.py
index e5227c2..a3ccfac 100644
--- a/tools/run_tests/xds_k8s_test_driver/tests/url_map/affinity_test.py
+++ b/tools/run_tests/xds_k8s_test_driver/tests/url_map/affinity_test.py
@@ -127,7 +127,7 @@
             1,
         )
 
-	# Any remaining subchannels may be in any state.
+        # Any remaining subchannels may be in any state.
 
         # Send 150 RPCs without headers. RPCs without headers will pick random
         # backends. After this, we expect to see all backends to be connected.