fix changelog title

Author: alexandratran

gator_versioned_docs/version-0.12.0/changelog/0.12.0.md

@@ -1,10 +1,10 @@
 ---
 sidebar_label: 0.12.0
 sidebar_position: 1
-description: MetaMask Delegation Toolkit v0.11.0 changelog
+description: MetaMask Delegation Toolkit v0.12.0 changelog
 ---
 
-# What's new in v0.11.0?
+# What's new in v0.12.0?
 
 :::warning Breaking changes