Fix year in release post

4a2f0fe#r64021846

Author: katesalazar

_releases/0.20.2.md

@@ -4,7 +4,7 @@ id: en-release-0.20.2
 name: release-0.20.2
 permalink: /en/releases/0.20.2/
 excerpt: Bitcoin Core version 0.20.2 is now available
-date: 2020-10-26
+date: 2021-10-26
 
 ## Use a YAML array for the version number to allow other parts of the
 ## site to correctly sort in "natural sort of version numbers"