pythongh-98254: Add what's new entry for the improvement in commit bb…

…56dea (python#99197)

Doc/whatsnew/3.12.rst

@@ -75,6 +75,15 @@ Important deprecations, removals or restrictions:
 Improved Error Messages
 =======================
 
+* Modules from the standard library are now potentially suggested as part of
+  the error messages displayed by the interpreter when a :exc:`NameError` is
+  raised to the top level. Contributed by Pablo Galindo in :gh:`98254`.
+
+    >>> sys.version_info
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in <module>
+    NameError: name 'sys' is not defined. Did you forget to import 'sys'?
+
 * Improve the error suggestion for :exc:`NameError` exceptions for instances.
   Now if a :exc:`NameError` is raised in a method and the instance has an
   attribute that's exactly equal to the name in the exception, the suggestion