Fix the issue number

The change is for gh-85260 (bpo-41088), not gh-85270 (bpo-41098).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: serhiy-storchaka

Lib/test/test_ast/test_ast.py

@@ -984,7 +984,7 @@ def test_constant_as_name(self):
                 compile(expr, "<test>", "eval")
 
     def test_constant_in_identifier_fields(self):
-        # gh-85270: an identifier field holding a constant name used to
+        # gh-85260: an identifier field holding a constant name used to
         # crash the compiler
         for statement in [
             "def x(): pass",