fix unpkg config

Author: Janther

README.md

@@ -66,7 +66,7 @@ We follow Prettier's strategy for populating their plugins in the object `pretti
     'https://unpkg.com/prettier-plugin-solidity@latest'
   );
   const prettierSolidity = await import(
-    'https://unpkg.com/prettier-plugin-solidity@latest'
+    'https://unpkg.com/prettier-plugin-solidity@next'
   );
 
   async function format(code) {

package-lock.json

@@ -1,11 +1,11 @@
 {
   "name": "prettier-plugin-solidity",
-  "version": "2.0.0-beta.3",
+  "version": "2.0.0-beta.4",
   "description": "A Prettier Plugin for automatically formatting your Solidity code.",
   "type": "module",
   "main": "./dist/index.js",
   "browser": "./dist/standalone.js",
-  "unpkg": "./dist/",
+  "unpkg": "./dist/standalone.js",
   "exports": {
     ".": "./dist/index.js",
     "./standalone": "./dist/standalone.js"