fix relative url

Author: nlharris

content/posts/2025-03-09-BOSC-BOKR.md

@@ -38,6 +38,6 @@ BOSC covers the full spectrum of open source, open science, open data and open s
 
 {{< endcolumns >}}
 
-You can [submit relevant abstracts](events/bosc-2025/submit) to either BOSC or BOKR (please do not double-submit the same abstract). The Program Chairs of both COSIs will consider appropriate abstracts for the joint session.
+You can [submit relevant abstracts](/events/bosc-2025/submit) to either BOSC or BOKR (please do not double-submit the same abstract). The Program Chairs of both COSIs will consider appropriate abstracts for the joint session.
 
 BOSC 2025 will take place July 21-22, and BOKR will be July 22-23. The joint session will be part or all of the day on July 22.