chore: fix changelog wording mistake

Author: Brian Faust

CHANGELOG.md

@@ -11,7 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 - Missing ID from delegate registrations
-- Maximum vendor field length _(previously 63, now 74)_
+- Maximum vendor field length _(previously 63, now 64)_
 
 ## 0.2.3 - 2018-09-30