fix changelog with mdformat

which did pass the MR, where mdformat wasn’t trigger
But, it’s failing the pipeline on main branch

CHANGELOG.md

@@ -3,10 +3,12 @@
 Bug fix release, because `libnacl` brought in a breaking change.
 
 ### Fixes
+
 - #206, !190: Fix `libnacl` version to 1.8.0
 - Fix deprecation warning about `typing.re.Pattern`
 
 ### Backport necessary changes from v1.2.0 development branch for beeing able to release
+
 - #194: Introduce `tests:3.11` job
   - to set `PYTHON_VERSION` to `3.11` in order to fix the pipeline since `pre-commit` is now installed on `3.11` image
 - Remove runners tags