[3.9] Fix typo in typing.py (GH-22121) (GH-22156)

This is a trivial PR to fix a typo in a docstring in typing.py. From reverences -> references
(cherry picked from commit 84ef33c)


Co-authored-by: Graham Bleaney <[email protected]>

Author: miss-islington

Lib/typing.py

@@ -245,7 +245,7 @@ def inner(*args, **kwds):
 
 
 def _eval_type(t, globalns, localns, recursive_guard=frozenset()):
-    """Evaluate all forward reverences in the given type t.
+    """Evaluate all forward references in the given type t.
     For use of globalns and localns see the docstring for get_type_hints().
     recursive_guard is used to prevent prevent infinite recursion
     with recursive ForwardRef.