Sync pre-release CPython 3.15 branch from GitHub (2026-08-15)

Summary:
Imported python/cpython `3.15.0rc1+dev` from upstream rev [`39a0217`](https://www.github.com/python/cpython/commit/39a0217217ce4f50d8908883f6b835a53692e5f6) (committed 2026-08-15 09:43:48+00:00).

# Commit Info

- Base: (`3.15.0rc1+dev`) - [`042df0a`](https://www.github.com/python/cpython/commit/042df0a7214a6bac74a5789b19ed3f0fe9f55d65) (commit date: 2026-08-14 09:19:51+00:00)
- Imported: (`3.15.0rc1+dev`) - [`39a0217`](https://www.github.com/python/cpython/commit/39a0217217ce4f50d8908883f6b835a53692e5f6) (commit date: 2026-08-15 09:43:48+00:00)

Reviewed By: itamaro

Differential Revision: D116191850

fbshipit-source-id: 3047e87d284d4721329d6079087bbe400abafeb5

Author: generatedunixname1734921407115435

Doc/library/annotationlib.rst

@@ -235,8 +235,8 @@ Functions
    annotate functions that support the :attr:`~Format.STRING` format but
    do not have access to the code creating the annotations.
 
-   For example, this is used to implement the :attr:`~Format.STRING` for
-   :class:`typing.TypedDict` classes created through the functional syntax:
+   For example, this is used to implement the :attr:`~Format.STRING` format
+   for :class:`typing.TypedDict` classes created through the functional syntax:
 
    .. doctest::