Update README.md

README.md

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-# Casbin.js Server Utilities for Casbin-Node
+# Casbin.js Server Utilities for Node-Casbin
 
 If you are using [Casbin.js](https://github.com/casbin/casbin.js) at your frontend and [Node-Casbin](https://github.com/casbin/node-casbin) as your backend Casbin service, you can install this package at your backend. This package provides a wrapper for generating the user permission, which can be passed to Casbin.js at the frontend.
 
@@ -26,4 +26,4 @@
         })
     })
 }
-```
\ No newline at end of file
+```