[TASK] Improve hints how to activate the debugger

templates/default/xdebug.ini.erb

@@ -4,7 +4,8 @@
 ;zend_extension = <%= Mixlib::ShellOut.new("php -i | grep extension_dir | awk 'NR==1 {print $(NF)}'").run_command.stdout.strip %>/xdebug.so
 zend_extension=xdebug.so
 
-; to activate the profiler: Change the variable "xdebug.mode" to "profile" instead of "debug" and use "xdebug.start_with_request" with "trigger"
+; To activate the cachegrind profiler: Change the variable "xdebug.mode" to "profile" instead of "debug" and use "xdebug.start_with_request" with "trigger" instead of "default".
+; You must restart the PHP FPM afterwards: e.g. "service php7.3-fpm restart".
 <% node['xdebug']['directives'].sort_by { |key, val| key }.each do |directive, value| -%>
 <%= "xdebug.#{directive} = #{value}" %>
 <% end -%>