Update README

Author: sgalal

README-en.md

@@ -7,7 +7,7 @@ Pure JavaScript implementation of OpenCC
 In HTML file:
 
 ```html
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@0.3.2"></script>
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@0.3.3"></script>
 ```
 
 Or in Node.js:

README.md

@@ -9,7 +9,7 @@
 在 HTML 中引入：
 
 ```html
-<script src="https://cdn.jsdelivr.net/npm/opencc-js@0.3.2"></script>
+<script src="https://cdn.jsdelivr.net/npm/opencc-js@0.3.3"></script>
 ```
 
 或在 Node.js 中引入：