docs: link to v21 blog post in changelog

josephperrott · josephperrott · commit 1b4d1f88dc84 · 2025-11-19T14:34:15.000-07:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 # 21.0.0 (2025-11-19)
 
+[Blog post "Announcing Angular v21"](http://goo.gle/angular-v21-blog).
+
 ## Breaking Changes
 
 ### common
