2020-05 report: use ikiwiki shortcuts and links instead of hardcoded URLs

wiki/src/blueprint/monthly_report/report_2020_05.mdwn

@@ -68,11 +68,11 @@ User experience
 Hot topics on our help desk
 ===========================
 
-1. We saw more problems for Mac computers this month, some users could not use [their keyboard and touchpad](https://gitlab.tails.boum.org/tails/tails/-/issues/13576), and others [could not start Tails](https://gitlab.tails.boum.org/tails/tails/-/issues/13576). If you plan to use a laptop for Tails, try to test it before buying it.
+1. We saw more problems for Mac computers this month, some users could not use [[!tails_ticket 13576 desc="their keyboard and touchpad"]], and others [[!tails_ticket 13576 desc="could not start Tails"]]. If you plan to use a laptop for Tails, try to test it before buying it.
 
-1. Many Electrum users had to restore their wallet as explained in [our documentation](https://tails.boum.org/doc/anonymous_internet/electrum/).
+1. Many Electrum users had to restore their wallet as explained in [[our documentation|doc/anonymous_internet/electrum/]].
 
-1. Some ATI Radeon cards [have problems to start Tails 4.7](https://gitlab.tails.boum.org/tails/tails/-/issues/17759).
+1. Some ATI Radeon cards [[!tails_ticket 17759 desc="have problems to start Tails 4.7"]].
 
 Infrastructure
 ==============