Bugfix of feature to show up- and downstream source links
- Hugo requires that the key of isset function is lowercase (see https://gohugo.io/functions/isset/)
Signed-off-by: Sietze van Buuren Sietze.vanBuuren@de.bosch.com
Signed-off-by: Sietze van Buuren Sietze.vanBuuren@de.bosch.com