fix teaching links

_pages/teaching.md

@@ -16,10 +16,11 @@ sidebar:
     image_alt: "Robocup at Home logo"
   - title: "Courses"
     text: |
-      - [RoboCup@Home (Pj | S & Ü)](#robocuphome-pj-|-s-&-Ü-wise)
+      - [RoboCup@Home (PJ / S+Ü)](#wise)
 ---
 
 ## RoboCup@Home (Pj | S & Ü) (WiSe)
+{: #wise }
 
 This module can be registered as either a 5/10 point project or a seminar/tutorial combination.