fix(release.config.js): use full commit hash in commit link [skip ci]

* Automated using https://github.com/myii/ssf-formula/pull/89

.travis.yml

         - pip install --user yamllint>=1.17.0
         - yamllint -s .
         # Install and run `commitlint`
-        - npm install @commitlint/config-conventional -D
-        - npm install @commitlint/travis-cli -D
+        - npm i -D @commitlint/config-conventional
+                   @commitlint/travis-cli
         - commitlint-travis
     # Run the `rubocop` linter in a separate job that is allowed to fail
     # Once these lint errors are fixed, this can be merged into a single job
         - maintainer contributor
 
         # Install all dependencies required for `semantic-release`
-        - npm install @semantic-release/changelog@3 -D
-        - npm install @semantic-release/exec@3 -D
-        - npm install @semantic-release/git@7 -D
+        - npm i -D @semantic-release/changelog@3
+                   @semantic-release/exec@3
+                   @semantic-release/git@7
       deploy:
         provider: script
         skip_cleanup: true

release.config.js

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