Add example of how to turn on a feature

Author: brettcannon

news/1 Enhancements/156.md

@@ -1 +1,8 @@
-Add support for the `editor.codeActionsOnSave.source.organizeImports` setting (thanks [Nathan Gaberel](https://github.com/n6g7)).
+Add support for the `"source.organizeImports"` setting for `"editor.codeActionsOnSave"` (thanks [Nathan Gaberel](https://github.com/n6g7)); you can turn this on just for Python using:
+```json
+"[python]": {
+    "editor.codeActionsOnSave": {
+        "source.organizeImports": true
+    }
+}
+```