Add link to issue #32

Signed-off-by: Fabio José <[email protected]>

Author: fabiojose

CHANGELOG.md

@@ -7,4 +7,5 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ## [Unreleased]
 ### Changed
 - Axios version to `0.18.1` due the CVE-2019-10742
-- Fix the `subject` attribute unmarshal error: issue #32
+- Fix the `subject` attribute unmarshal error: issue
+[#32](https://github.com/cloudevents/sdk-javascript/issues/32)