Wordpress WP_SITEURL and WP_HOME values?

[admin]

I have a single WordPress installation and my website is at "example.com/site". Everything works great.

I want to move my site to "example.com". The instructions I got from my hosting company are described at the link

"codex.wordpress.org/Changing_The_Site_URL"

Do I simply need to edit my wp-config file to the following ?

define('WP_HOME','http://www.example.com');
define('WP_SITEURL','http://www.example.com/site');

I have never done this before and not sure about the correct values for WP_HOME and

WP_SITEURL

. Can you please help me. I don't want to break anything.

Thank you