Better linter settings documentation

With `linters` key seems more clear.

Author: Filippo Gangi Dino

README.md

@@ -32,16 +32,24 @@ You can configure rubocop exactly the way you would from the command line, using
 To override the config file path, you would add this to the Sublime Linter User Settings:
 
 ```json
-"rubocop": {
-    "args": ["--config", "path/to/config.yml"]
+{ 
+    "linters": {
+        "rubocop": {
+            "args": ["--config", "path/to/config.yml"]
+        }
+    }
 }
 ```
 
 ### Bundler
 If you are using Bundler and would like to use the locked rubocop version (which will also allow you to use `inherit_gem` in `rubocop.yml`, in case you are inheriting from another gem in the project), you must set `use_bundle_exec` to true:
 
 ```json
-"rubocop": {
-    "use_bundle_exec": true
+{ 
+    "linters": {
+        "rubocop": {
+            "use_bundle_exec": true
+        }
+    }
 }
 ```