feat(release.config.js): use full commit hash in commit link

* conventional-changelog/conventional-changelog#523
  - Get latest changes introduced by this PR
  - Fixes commit short hashes no longer showing in both the release notes
    and the changelog

ssf/files/default/release.config.js

@@ -63,7 +63,7 @@ module.exports = {
           }
 
           if (typeof commit.hash === `string`) {
-              commit.hash = commit.hash.substring(0, 7)
+              commit.shortHash = commit.hash.substring(0, 7)
           }
 
           if (typeof commit.subject === `string`) {