skip autocorrect tld

lib/submissions.rb

@@ -111,6 +111,9 @@ module Submissions
     return email.downcase if email.to_s.include?('.mm')
     return email.downcase if email.to_s.include?('.cm')
     return email.downcase if email.to_s.include?('.et')
+    return email.downcase if email.to_s.include?('.mo')
+    return email.downcase if email.to_s.include?('.nz')
+    return email.downcase if email.to_s.include?('.za')
     return email.downcase unless email.to_s.include?('.')
 
     fixed_email = EmailTypo.call(email.delete_prefix('<'))