add pickem's link

Author: LeoFLT

wiki/Tournaments/TWC/2025/en.md

@@ -56,6 +56,7 @@ The osu!taiko World Cup 2025 is run by the [osu! team](/wiki/People/osu!_team) a
 - [Discussion thread](https://osu.ppy.sh/community/forums/topics/2041167)
 - [Tournament listing](https://osu.ppy.sh/community/tournaments/49)
 - [Challonge bracket](https://challonge.com/TWC2025)
+- [Pick'ems page](https://pickem.hwc.hr/tournaments/166) hosted by ::{ flag=DE }:: [hallowatcher](https://osu.ppy.sh/users/1874761)
 
 ## Participants