Fix invalid directory reference in LICENSE.md

- Update incorrect reference from `lib/react_on_rails/pro_features/`
- to correct `lib/react_on_rails/pro/` directory
- Ensures LICENSE.md accurately reflects actual directory structure

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: justin808

LICENSE.md

@@ -9,7 +9,7 @@
 
 This license applies to all files within this repository, with the exception of the code located in the following directories, which are licensed separately under the React on Rails Pro License:
 
-- `lib/react_on_rails/pro_features/`
+- `lib/react_on_rails/pro/`
 - `node_package/src/pro/`
 
 Copyright (c) 2017, 2018 Justin Gordon and ShakaCode