Refactor ProseMirror-proofread library: Update library description in…

… README.md

README.md

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 # ProseMirror-proofread
 
-**ProseMirror-proofread** is an advanced plugin for adding spell-check and grammar-checking capabilities to your ProseMirror editor. This library helps you to integrate with a variety of spell-check services, including LanguageTool. This library is designed to handle caching, ignore, and pop-ups. It is up to the developer's responsibility to implement UI and spell checking services. In the example, example integration with LanguageTool and an example UI are provided, which can be a good starting point.
+**ProseMirror-proofread** is a plugin for adding spell-check and grammar-checking capabilities to your ProseMirror editor. This library helps you to integrate with a variety of spell-check services, including LanguageTool. This library is designed to handle caching, ignore, and pop-ups. It is up to the developer's responsibility to implement UI and spell checking services. In the example, example integration with LanguageTool and an example UI are provided, which can be a good starting point.
 
 ## Features