fix: update sponsor invitation e-mail for mchacks 9.

Author: brarsanmol

assets/email/AccountInvitation.hbs

@@ -392,10 +392,10 @@
                                                 have resume access you will be able to download hacker resumes through
                                                 the dashboard.
                                                 <br><br>
-                                                Sponsor check-in starts at 6:00 pm on Friday, January 29th on the
+                                                Sponsor check-in starts at 6:00 pm on Friday, January 21st on the
                                                 McHacks Discord server and opening ceremonies will begin at 7:00 pm. Be
                                                 sure to get set up on the McHacks Discord server at <a
-                                                    href="https://discord.gg/g4Pya8jcxM"
+                                                    href="https://discord.gg/XVSdW9pc"
                                                     style="-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;color:#F2463A;text-decoration:none;">https://discord.gg/g4Pya8jcxM</a>
                                                 and contact your coordinator to set up your server roles.
                                                 <br><br>