Update Lib/test/test_support.py

Co-authored-by: Brett Cannon <[email protected]>

Author: vstinner

Lib/test/test_support.py

@@ -751,7 +751,7 @@ def recursive_function(depth):
                 else:
                     self.fail("RecursionError was not raised")
 
-        # test the bare minimumum: max_depth=2
+        # Test the bare minimumum: max_depth=2 .
         with support.infinite_recursion(2):
             try:
                 recursive_function(2)