Update Lib/test/test_functools.py

Co-authored-by: AN Long <aisk@users.noreply.github.com>

Author: bkap123

Lib/test/test_functools.py

@@ -515,7 +515,7 @@ def test_partial_genericalias(self):
         self.assertEqual(alias.__parameters__, ())
 
     # Issue 144475
-    def test_repr_saftey_against_reentrant_mutation(self):
+    def test_repr_safety_against_reentrant_mutation(self):
         g_partial = None
 
         class Function: