fix uniklinik hotkey

templates/i3/i3.config.j2

@@ -220,7 +220,7 @@ mode "timer" {
   bindsym a exec "~/bin/timer activity"; mode "default"; {{on_focus_workspace}}
   bindsym e exec "~/bin/timer end"; mode "default"; {{on_focus_workspace}}
   bindsym r exec "~/bin/timer update"; mode "default"; {{on_focus_workspace}}
-  bindsym r exec "~/bin/timer uniklinik"; mode "default"; {{on_focus_workspace}}
+  bindsym u exec "~/bin/timer uniklinik"; mode "default"; {{on_focus_workspace}}
 
   # back to normal: Escape
   bindsym Escape mode "default"; {{on_focus_workspace}}