Cross-link 3.20 and 3.21 announcements

Author: gsmet

_posts/2025-03-26-quarkus-3-20-0-released.adoc

@@ -10,7 +10,7 @@ author: gsmet
 It is our pleasure to announce the release of Quarkus 3.20, which is our new LTS (Long Term Support) version.
 
 This version is built on the top of Quarkus 3.19 with some additional bugfixes.
-New features landed in Quarkus 3.21, which was also released today.
+New features landed in https://quarkus.io/blog/quarkus-3-21-0-released/[Quarkus 3.21], which was also released today.
 
 If you want to know more about our LTS policy, the https://quarkus.io/blog/lts-releases/[LTS announcement] is a must read.
 

_posts/2025-03-26-quarkus-3-21-0-released.adoc

@@ -7,7 +7,7 @@ synopsis: 'Quarkus 3.21 comes with a lot of small enhancements and TLS Registry
 author: gsmet
 ---
 
-Today, together with Quarkus 3.20 LTS, we released Quarkus 3.21.
+Today, together with https://quarkus.io/blog/quarkus-3-20-0-released/[Quarkus 3.20 LTS], we released Quarkus 3.21.
 
 Whereas Quarkus 3.20 LTS is the direct continuation of Quarkus 3.19, Quarkus 3.21 comes with new features.