Update changelog

Author: jeffgbutler

CHANGELOG.md

@@ -6,8 +6,7 @@ This log will detail notable changes to MyBatis Dynamic SQL. Full details are av
 
 ### Added
 
-- Added a new sort specification that is useful in selects with joins
-
+- Added a new sort specification that is useful in selects with joins ([#269](https://github.com/mybatis/mybatis-dynamic-sql/pull/269))
 
 ## Release 1.2.1 - September 29, 2020