Fix another awkward typo

config.js

@@ -1,5 +1,5 @@
 module.exports = {
-  // your cummunity or team name to display on join page.
+  // your community or team name to display on join page.
   community: process.env.COMMUNITY_NAME || 'YOUR-TEAM-NAME',
   // your slack team url (ex: socketio.slack.com)
   slackUrl: process.env.SLACK_URL || 'YOUR-TEAM.slack.com',