fix 2.2.1 release notes link

Author: pierrebeitz

src/releases.json

@@ -18,7 +18,7 @@
       "direct": "https://downloads.dcos.io/dcos/stable/dcos_generate_config.sh"
     },
     "subreleases": [
-      { "name": "2.2.1", "url": "https://docs.d2iq.com/mesosphere/dcos/2.2/release-notes/2.2.1"},
+      { "name": "2.2.1", "url": "https://docs.d2iq.com/mesosphere/dcos/2.2/release-notes/2.2"},
       { "name": "2.2.0", "url": "https://docs.d2iq.com/mesosphere/dcos/2.2/release-notes/2.2"}
     ],
     "docslink": "https://docs.d2iq.com/mesosphere/dcos/2.2/"

src/releases/index.jade

@@ -18,7 +18,7 @@ block content
               h3.mb0 Latest Stable
               p.release-version.pb1 DC/OS 2.2
               p.hero-list__item__copy__paragraph.release-copy Latest stable release. Tested and ready for use in production.
-              a.cta.cta--text.release-notes.pb0(href='https://docs.d2iq.com/mesosphere/dcos/2.2/release-notes/2.2.1/') Release Notes
+              a.cta.cta--text.release-notes.pb0(href='https://docs.d2iq.com/mesosphere/dcos/2.2/release-notes/2.2/') Release Notes
 
               div.release-buttons.pb3
                 a.cta.cta--button.inline-block(href='https://docs.d2iq.com/mesosphere/dcos/2.2/installing/evaluation/universal-installer-0.3/aws/', target='_blank') Amazon