chore: revert golangci#3506

Author: ldez

docs/src/docs/contributing/new-linters.mdx

@@ -83,8 +83,11 @@ If you're looking for instructions on how to configure your own custom linter, t
 
 That is all the configuration that is required to run a custom linter in your project.
 
-Custom linters are disabled by default, and are not enabled when `linters.enable-all` is specified.
-They can be enabled by adding them the `linters.enable` list, or providing the enabled option on the command line (`golangci-lint run -Eexample`).
+Custom linters are enabled by default, but abide by the same rules as other linters.
+
+If the disable all option is specified either on command line or in `.golang.yml` files `linters.disable-all: true`, custom linters will be disabled;
+they can be re-enabled by adding them to the `linters:enable` list,
+or providing the enabled option on the command line, `golangci-lint run -Eexample`.
 
 The configuration inside the `settings` field of linter have some limitations (there are NOT related to the plugin system itself):
 we use Viper to handle the configuration but Viper put all the keys in lowercase, and `.` cannot be used inside a key.