Fix typo in tag for disabled flaky test

PiperOrigin-RevId: 306554548
Change-Id: I68d5aa0d212e5062224e389a893648621d198808

tensorflow/python/kernel_tests/BUILD

@@ -2917,7 +2917,7 @@ cuda_py_test(
     srcs = ["conv_ops_test.py"],
     shard_count = 4,
     tags = [
-        "nopug",  # TODO(b/153763253); flaky
+        "nogpu",  # TODO(b/153763253); flaky
         "optonly",  # times out
     ],
     deps = [