regrtest.py: Fix another typo in the usage of the faulthandler module

diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index 7086c7c776dfa5b1a04e4e3571d03298eafd4049..ddb6b9230c1c6c20c000b6f9eddfa99883b487a4 100755 (executable)
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -944,7 +944,7 @@ def runtest(test, verbose, quiet,
         return result
     finally:
         if use_timeout:
-            faulthandler.cancel_dump_tracebacks_later()
+            faulthandler.cancel_dump_traceback_later()
         cleanup_test_droppings(test, verbose)
 runtest.stringio = None