[3.14] Fix typo in Lib/test/test_ast/test_ast.py (pythonGH-136767) (python#136783)

Fix typo in `Lib/test/test_ast/test_ast.py` (pythonGH-136767)

`ASTOptimiziationTests` -> `ASTOptimizationTests`
(cherry picked from commit 60146f4)

Co-authored-by: Hunter Hogan <[email protected]>

Author: miss-islington

Lib/test/test_ast/test_ast.py

@@ -3547,7 +3547,7 @@ def test_show_empty_flag(self):
         self.check_output(source, expect, '--show-empty')
 
 
-class ASTOptimiziationTests(unittest.TestCase):
+class ASTOptimizationTests(unittest.TestCase):
     def wrap_expr(self, expr):
         return ast.Module(body=[ast.Expr(value=expr)])