redirect /courses to something valid

https://mattermost.hzdr.de/hifis/pl/6upaghen8iywpb3uhj6t9pazze

redirect /courses to something valid
86e852d7 · Uwe Jandt (DESY, HIFIS) · 4832a2d8 · 86e852d7
Commit 86e852d7 authored 5 months ago by Uwe Jandt (DESY, HIFIS)
--- a/courses.md
+++ b/courses.md
@@ -2,7 +2,7 @@
 title: HIFIS Courses, Education & Training
 title_image: default
 layout: default
-redirect_to: https://www.helmholtz-hida.de/course-catalog/en/?search%5Bfilter%5D%5B0%5D=tags%3AHIFIS
+redirect_to: https://www.helmholtz-hida.de/course-catalog/en/?search%5Bq%5D=HIFIS
 excerpt:
    HIFIS Education & Training
 ---