Fixed markdown file

Author: lyrixx

CHANGELOG.md

@@ -9,7 +9,7 @@ CHANGELOG
  * Tagging voters with the `security.voter` tag without implementing the
    `VoterInterface` on the class is now deprecated and will be removed in 4.0.
  * [BC BREAK] `FirewallContext::getListeners()` now returns `\Traversable|array`
- * added info about called security listeners in profiler 
+ * added info about called security listeners in profiler
  * Added `logout_on_user_change` to the firewall options. This config item will
    trigger a logout when the user has changed. Should be set to true to avoid
    deprecations in the configuration.