GEP-696: Fix broken link in template

Fix broken link for status definitions in GEP-696, which is the template
GEP.

Author: gcs278

geps/gep-696/index.md

@@ -3,7 +3,7 @@
 * Issue: [#696](https://github.com/kubernetes-sigs/gateway-api/issues/696)
 * Status: Provisional|Implementable|Experimental|Standard|Deferred|Rejected|Withdrawn|Replaced
 
-(See status definitions [here](overview.md#status).)
+(See status definitions [here](/geps/overview/#gep-states).)
 
 ## TLDR