Apply suggestions from code review

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: sobolevn

Doc/deprecations/pending-removal-in-3.21.rst

@@ -41,6 +41,6 @@ Pending removal in Python 3.21
 * :mod:`typing`:
 
    * :data:`typing.AnyStr` has been discouraged
-     and deprecated since Python 3.16
+     and deprecated since Python 3.13
      and is scheduled to be removed in Python 3.21.
      Use :pep:`695` syntax instead.

Lib/typing.py

@@ -3543,7 +3543,7 @@ def __ror__(self, other):
 TYPE_CHECKING = False
 
 # Since `AnyStr` public API is deprecated since 3.16 and will be removed
-# in 3.18, we need to keep `IO` protocol the same as it used to be:
+# in 3.21, we need to keep `IO` protocol the same as it used to be:
 class IO[AnyStr: (bytes, str)]:
     """Generic base class for TextIO and BinaryIO.
 
@@ -3951,7 +3951,7 @@ def __subclasscheck__(self, cls):
             "typing.AnyStr",
             message=(
                 "{name!r} is deprecated and slated for removal "
-                "in Python {remove}. Use PEP-695 type parameters "
+                "in Python {remove}. Use PEP 695 type parameters "
                 "with constraints instead"
             ),
             remove=(3, 21),

Misc/NEWS.d/next/Library/2026-05-21-16-15-01.gh-issue-105578.oq-0pg.rst

@@ -1,2 +1,2 @@
-Deprecate :data:`typing.AnyStr` type variable and raise a warning, when it
+Deprecate :data:`typing.AnyStr` type variable and raise a warning when it
 is imported.