docs: Fixed a formatting issue in the changelog.

Author: seifertm

docs/reference/changelog.rst

@@ -4,9 +4,9 @@ Changelog
 
 All notable changes to this project will be documented in this file.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+The format is based on `Keep a Changelog <https://keepachangelog.com/en/1.1.0/>`__, and this project adheres to `Semantic Versioning <https://semver.org/spec/v2.0.0.html>`__.
 
-This project uses [*towncrier*](https://towncrier.readthedocs.io/) for changlog management and the changes for the upcoming release can be found in <https://github.com/pytest-dev/pytest-asyncio/tree/main/changelog.d/>.
+This project uses `towncrier <https://towncrier.readthedocs.io/>`__ for changlog management and the changes for the upcoming release can be found in https://github.com/pytest-dev/pytest-asyncio/tree/main/changelog.d/.
 
 .. towncrier release notes start