Update CHANGELOG.md

Author: kyb3r

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-# 2.13.7
+# v2.13.7
 
 ### Added
 
@@ -19,13 +19,13 @@ If you want the bot to type in the thread channel if the user is also typing, ad
 ### Changed
 - The internals for `activity` has drastically changed to accommodate the new `status` command.  
 
-# 2.13.6
+# v2.13.6
 
 ### Fixed
 
 Fixed a bug in the contact command where the response message did not send.
 
-# 2.13.5
+# v2.13.5
 
 ### Added
 - You will no longer need to view your bot debug logs from Heroku. `debug` will show you the you the recent logs within 24h through a series of embeds.