Fix wrong heading for Group Form edit page

Co-authored-by: Hannah Content <hannah.cooper@digital.cabinet-office.gov.uk>

Author: chao-xian

config/locales/en.yml

@@ -438,7 +438,7 @@ en:
     edit:
       body_html: "<p> We’ll send an email to members of the current group to let them know the form has moved and they may no longer have access to it. </p>\n"
       form_name_label: Form name
-      group_name_label: Group name
+      group_name_label: Current group
       placeholder: Select a group
     update:
       success: "'%{form_name}'  has been moved to '%{receiving_group_name}'"