How to change the link address from internal to external

Look at the line below
It now reads the file (script.js) from the same folder

I want to replace the link to another site for example: https://site2.com/script.js

wp_register_script(
    'post_publisher_js', 
    plugins_url('script.js', __FILE__),
    array( 'jquery' ),
    "1.0.2"
);