fix: adapt prettier@3 (#10)

Author: HerrCai0907

README.md

@@ -2,15 +2,13 @@
 
 prettier plugin for assemblyscript.
 
-This is version 2 and require `prettier@3`(still in alpha stage)
-
 If you want to use `prettier@2`, please see [version 1](https://www.npmjs.com/package/assemblyscript-prettier/v/1.0.7)
 
 ## Install
 
 ```bash
 npm i -D assemblyscript-prettier
-npm i -D [email protected]-alpha.6
+npm i -D [email protected]
 ```
 
 ## Usage