Fix misformed title in changelog

AntoineD · jugmac00 · commit 3c576a70a119 · 2021-07-15T21:47:43.000+02:00
diff --git a/docs/changelog.rst b/docs/changelog.rst
@@ -12,6 +12,8 @@ with advance notice in the **Deprecations** section of releases.
 .. towncrier release notes start
 
 v3.24.0 (2021-07-14)
+--------------------
+
 Bugfixes
 ^^^^^^^^
 
