Fixes build issue with rns (quay#1436)

Co-authored-by: Steven Smith <[email protected]>

Author: stevsmit

modules/rn_3_15_0.adoc

@@ -31,7 +31,7 @@ Issued 2025-08-14
 
 {productname} release 3.15.1 is now available with Clair {clairproductminv}. The bug fixes that are included in the update are listed in the link:https://access.redhat.com/errata/RHBA-2025:13256[RHBA-2025:13256] advisory.
 
-[id="315-1-new-features"]
+[id="rn-315-1-new-features"]
 === {productname} 3.15.1 new features
 
 The following features have been added with {productname} 3.15.1.