Add sort_id

Author: fatso83

docs/release-source/release.md

@@ -3,6 +3,7 @@ layout: page
 title: API documentation - Sinon.JS
 skip_ad: true
 release_id: master
+sort_id: master
 ---
 
 # {{page.title}} - `{{page.release_id}}`

docs/releases.html

@@ -18,7 +18,7 @@ <h1>Releases</h1>
 
 <div class="in-content releases">
     <ul>
-        {% assign sorted_releases = site.releases | sort: "release_id" | reverse %}
+        {% assign sorted_releases = site.releases | sort: "sort_id" | reverse %}
         {% for release in sorted_releases %}
             {% assign url_parts = release.url | split: "/" %}