Update README.md due Xdebug 2 to 3 upgrade

https://xdebug.org/docs/upgrade_guide

Author: Adrian Perez

README.md

@@ -215,22 +215,17 @@ moodle-docker-compose exec webserver pecl install xdebug
 # Set some wise setting for live debugging - change this as needed
 read -r -d '' conf <<'EOF'
 ; Settings for Xdebug Docker configuration
-xdebug.coverage_enable = 0
-xdebug.default_enable = 0
-xdebug.cli_color = 2
-xdebug.file_link_format = phpstorm://open?%f:%l
-xdebug.idekey = PHPSTORM
-xdebug.remote_enable = 1
-xdebug.remote_autostart = 1
-xdebug.remote_host = host.docker.internal
+xdebug.mode = debug
+xdebug.client_host = host.docker.internal
 EOF
 moodle-docker-compose exec webserver bash -c "echo '$conf' >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini"
 
-# Enable XDebug extension in Apache
+# Enable XDebug extension in Apache and restart the webserver container
 moodle-docker-compose exec webserver docker-php-ext-enable xdebug
+moodle-docker-compose restart webserver
 ```
 
-While setting these XDebug settings depending on your local need, please take special care of the value of `xdebug.remote_host` which is needed to connect from the container to the host. The given value `host.docker.internal` is a special DNS name for this purpose within Docker for Windows and Docker for Mac. If you are running on another Docker environment, you might want to try the value `localhost` instead or even set the hostname/IP of the host directly.
+While setting these XDebug settings depending on your local need, please take special care of the value of `xdebug.client_host` which is needed to connect from the container to the host. The given value `host.docker.internal` is a special DNS name for this purpose within Docker for Windows and Docker for Mac. If you are running on another Docker environment, you might want to try the value `localhost` instead or even set the hostname/IP of the host directly.
 
 After these commands, XDebug ist enabled and ready to be used in the webserver container.
 If you want to disable and re-enable XDebug during the lifetime of the webserver container, you can achieve this with these additional commands: