docs: announce canary docs [skip release] (#1044)

Author: balazsorban44

www/docusaurus.config.js

@@ -48,14 +48,12 @@ module.exports = {
         }
       ]
     },
-    /*
     announcementBar: {
       id: 'release-candiate-announcement',
-      content: 'NextAuth.js v2.0 has been released <a target="_blank" rel="noopener noreferrer" href="https://www.npmjs.com/package/next-auth">npm i next-auth</a>',
+      content: 'NextAuth.js now has automatic 🤖 releases 🎉! Check out the <a href="https://next-auth-git-canary.nextauthjs.vercel.app">Canary documentation 📚</a>',
       backgroundColor: '#2DB2F9',
       textColor: '#fff'
     },
-    */
     footer: {
       links: [
         {
@@ -68,6 +66,10 @@ module.exports = {
             {
               label: 'Contributors',
               to: '/contributors'
+            },
+            {
+              label: 'Canary docs',
+              to: 'https://next-auth-git-canary.nextauthjs.vercel.app/'
             }
           ]
         },