Use the new :user: role in changelog
@@ -3,7 +3,7 @@ v18.6.1
* :issue:`1849` via :pr:`1879`: Fixed XLF flag in gzip header
emitted by gzip compression tool per
- :rfc:`1952#section-2.3.1`.
+ :rfc:`1952#section-2.3.1` -- by :user:`webknjaz`.
v18.6.0
-------
