2018-02 report: use ikiwiki shortcut instead of hard-coded links to tickets.

wiki/src/blueprint/monthly_report/report_2018_02.mdwn

@@ -72,9 +72,11 @@ User experience
 Hot topics on our help desk
 ===========================
 
-1. Users are still complaining about [[Electrum being outdated|https://labs.riseup.net/code/issues/15022]]
+1. Users are still complaining about
+   [[!tails_ticket desc="Electrum being outdated" 15022]]
 
-2. A lot of reports are about the [[Tails Installer Unicode issue|https://labs.riseup.net/code/issues/15254]]
+2. A lot of reports are about the
+   [[!tails_ticket desc="Tails Installer Unicode issue" 15254]]
 
 
 Infrastructure