chore: update change log for v0.80.2

Author: honcao

releases/CHANGELOG-v0.80.2.md

@@ -5,6 +5,7 @@ Notable changes in this release:
 
 - The control-plane nodes' taint has been changed from node-role.kubernetes.io/master to node-role.kubernetes.io/control-plane, requiring users to update tolerations in their applications to schedule pods on these nodes. Example:
 
+
 ```
 tolerations:
 - key: node-role.kubernetes.io/control-plane