Fix url for AuthOMath meeting.

website_files/Events/2024-03-27-AuthOMathGGB.md

@@ -27,6 +27,6 @@ Demonstration materials associated with this event will be online here:  <https:
 
 ### Sign up
 
-Please register using this form by Monday 18th March 2024: <https://www.authomath.org/wp-admin/admin.php?page=nf-submissions&form_id=3>
+Please register using this form by Monday 18th March 2024: <https://www.authomath.org/?page_id=1876&lang=en>
 
 You are welcome to attend the event in person. A vegetarian sandwich lunch will be provided for every participant attending in-person. If you have any special dietary requirements, please email <a href="mailto:[email protected]">Konstantina Zerva</a> after you have completed the registration form.