Fix updated name

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

Author: MorrisJobke

admin_manual/configuration_server/config_sample_php_parameters.rst

@@ -2101,8 +2101,8 @@ administrator.". In some cases this should not be triggered, because it was a
 normal maintenance change. To disable this specific email the appconfig option
 ``disable_email.email_address_changed_by_admin`` can be set to ``yes``::
 
-	occ config:app:set settings disable_email.email_address_changed_by_admin --value yes
+	occ config:app:set settings disable_activity.email_address_changed_by_admin --value yes
 
 To disable this behaviour change it to any other value or delete the app config::
 
-	occ config:app:delete settings disable_email.email_address_changed_by_admin
+	occ config:app:delete settings disable_activity.email_address_changed_by_admin