docs: Added missing changelog entry about the loop_scope kwarg.

Signed-off-by: Michael Seifert <[email protected]>

Author: seifertm

Diff for: docs/source/reference/changelog.rst

@@ -4,7 +4,8 @@ Changelog
 
 0.24.0 (UNRELEASED)
 ===================
-- Deprecates the optional `scope` keyword argument of asyncio markers. Users are encouraged to use the `loop_scope` keyword argument. The `loop_scope` kwarg does exactly the same, though its naming is consistent with the `loop_scope` kwarg of ``pytest_asyncio.fixture``.
+- Adds an optional `loop_scope` keyword argument to `pytest.mark.asyncio`. This argument controls which event loop is used to run the marked async test. `#706`_, `#871 <https://github.com/pytest-dev/pytest-asyncio/pull/871>`_
+- Deprecates the optional `scope` keyword argument to `pytest.mark.asyncio` for API consistency with ``pytest_asyncio.fixture``. Users are encouraged to use the `loop_scope` keyword argument, which does exactly the same.
 
 
 0.23.8 (2024-07-17)