update GitHub in use error message copy

server/boot/a-extendUserIdent.js

@@ -53,11 +53,8 @@ export default function({ models }) {
           return Observable.throw(
             new Error(
               dedent`
-  It looks like you already have an account associated with that sign in method.
-  Here's what you can do: 1) Sign out of this account. 2) Use that sign in
-  method to sign into your other account. 3) Delete that account.
-  4) Then sign back into this account and you'll be able to link it here.
-  If you need help, send us an email at team@freecodecamp.com.
+  Your GitHub is already associated with another account. You may have accidentally created a duplicate account.
+  No worries, though. We can fix this real quick. Please email us with your GitHub username: team@freecodecamp.com.
               `.split('/n').join(' ')
             )
           );