docs: fix feat-13923.en.md

changes/ce/feat-13923.en.md

@@ -3,4 +3,4 @@ Added `zone` to authentication, authorization and mountpoint template.
 Prior to this change, if one wants to use `zone` name in authentication or authorization rules, they would have to use `client_attrs`.
 Now `${zone}` can be used directly in authentication and authentication.
 
-As an example, here is an ACL rule making use of `zone`: `{allow, all, all, [${zone}/${username}/#]}`.
+As an example, here is an ACL rule making use of `zone`: `{allow, all, all, ["${zone}/${username}/#"]}`.