chore: update readme

Author: Deepak-Kharah

README.md

@@ -15,8 +15,8 @@ npm install @contentstack/live-preview-utils
 Alternatively, if you want to include the package directly in your website HTML code, use the following command:
 
 ```html
-<script type='module'  integrity='sha384-lCmcVfWM6NvgMmsDlPZYYJ9MwFk9oDU3WhsJ3KmUJPWa7iKvIuYl+XzTl+cOCuim' crossorigin="anonymous">
-     import ContentstackLivePreview from 'https://esm.sh/@contentstack/live-preview-utils@2.0.4';
+<script type='module'  integrity='sha384-9M4o9H23Ax5ZTzsMRLgdlFBYk2hy+ub6XDiZhHWJjfebQ+MZ9iZw+GNep9ac0uFV' crossorigin="anonymous">
+     import ContentstackLivePreview from 'https://esm.sh/@contentstack/live-preview-utils@3.0.0';
 
      ContentstackLivePreview.init({
         stackDetails: {