DS link to content - how to change the link?
Maybe display suite extras can help you achieve this with a combination of tokens. 


After you enable the Display Suite Extras you could go to admin/structure/ds/fields and create a new code field. 
Label your code field and tell you will be using tokens. 




3 In manage Display of your content type disable the title and enable your new field that it was created by Display Suite Extras.

This tutorial helped me in doing something similar that you are trying to do. 
Customize ULR/link display suite and tokens . I hope it helps :)