Platform.sh custom xdebug configuration example not working

[scottfalkingham]

Link to the page that needs to be updated or changed.
https://docs.lando.dev/config/platformsh.html#xdebug

Describe the change you'd like
The example custom xdebug configuration is not picked up by lando.

config:
  id: PROJECT_ID
  overrides:
    app:
      runtime:
        extensions:
          - redis
          - xdebug
      php:
        # XDEBUG 2
        xdebug.remote_enable: 1
        xdebug.remote_mode: req
        xdebug.remote_port: 9000
        xdebug.remote_connect_back: 0

After placing the configuration in many different places, the following location was discovered to work correctly.

name: PROJECT_ID
config:
  variables:
    app:
      php:
        xdebug.remote_enable: 1
        xdebug.remote_mode: req
        xdebug.remote_port: 9000
        xdebug.remote_connect_back: 0
  overrides:
    app:
      runtime:
        extensions:
          - redis
          - xdebug