Merge pull request rails#54270 from grantbdev/update_assets_debug_doc

Remove stale documentation about `assets.debug` [ci skip]

Author: rafaelfranca

guides/source/configuring.md

@@ -695,7 +695,7 @@ Enables the use of SHA256 fingerprints in asset names. Set to `true` by default.
 
 #### `config.assets.debug`
 
-Disables the concatenation and compression of assets. Set to `true` by default in `development.rb`.
+Disables the concatenation and compression of assets.
 
 #### `config.assets.version`