Fixed typo in title of notification parameter

main/install/db_main.sql

@@ -2618,7 +2618,7 @@ ALTER TABLE notification ADD index mail_notify_freq_index (sent_at, send_freq, c
 
 INSERT INTO user_field (field_type, field_variable, field_display_text, field_visible, field_changeable, field_default_value) values (4, 'mail_notify_invitation',   'MailNotifyInvitation',1,1,'1');
 INSERT INTO user_field (field_type, field_variable, field_display_text, field_visible, field_changeable, field_default_value) values (4, 'mail_notify_message',		 'MailNotifyMessage',1,1,'1');
-INSERT INTO user_field (field_type, field_variable, field_display_text, field_visible, field_changeable, field_default_value) values (4, 'mail_notify_group_message','MailNotifyGroup_message',1,1,'1');
+INSERT INTO user_field (field_type, field_variable, field_display_text, field_visible, field_changeable, field_default_value) values (4, 'mail_notify_group_message','MailNotifyGroupMessage',1,1,'1');
 
 INSERT INTO user_field_options (field_id, option_value, option_display_text, option_order) values (6, '1', 'AtOnce',1);
 INSERT INTO user_field_options (field_id, option_value, option_display_text, option_order) values (6, '8', 'Daily',2);