changelog - fix formatting (#1928)

[stable-7] changelog - fix formatting

SUMMARY
Fixes an extra backtick that snuck into a changelog fragment.
ISSUE TYPE

Docs Pull Request

COMPONENT NAME
changelogs/changelog.yml
ADDITIONAL INFORMATION
See also #1926

Reviewed-by: Alina Buzachis

changelogs/changelog.yaml

@@ -2583,7 +2583,7 @@ releases:
       bugfixes:
       - ec2_vpc_subnet - cleanly handle failure when subnet isn't created in time
         (https://github.com/ansible-collections/amazon.aws/pull/1848).
-      - s3_object - Fix typo that caused false deprecation warning when setting ``overwrite=latest```
+      - s3_object - Fix typo that caused false deprecation warning when setting ``overwrite=latest``
         (https://github.com/ansible-collections/amazon.aws/pull/1847).
       - s3_object - when doing a put and specifying ``Content-Type`` in metadata,
         this module (since 6.0.0) erroneously set the ``Content-Type`` to ``None``