[Logger] Removing channels: ~

Page: https://symfony.com/doc/6.4/logging/channels_handlers.html

Reason: PHP's equivalent of YAML's `~` is `null`, right? However, I couldn't get this to work with Symfony's new array shape config, so I'm figuring this info does more harm than good.

Author: ThomasLandauer

logging/channels_handlers.rst

@@ -108,14 +108,14 @@ You can specify the configuration in different ways:
 
 .. code-block:: yaml
 
-    channels: ~    # Include all the channels
-
     channels: foo  # Include only channel 'foo'
     channels: '!foo' # Include all channels, except 'foo'
 
     channels: [foo, bar]   # Include only channels 'foo' and 'bar'
     channels: ['!foo', '!bar'] # Include all channels, except 'foo' and 'bar'
 
+To include *all* channels, just omit the ``channels`` key.
+
 Creating your own Channel
 -------------------------