That all depends on what sort of web editor you are using or if you are using one at all. If you are using an editor you simply make the correction on the copy of the page you have in your computer...
Go to the web-page you want to set as home-page. Then when your on the web-page, klick on the icon where it says example. wiki answers, and there is the a. Klick with your mouse on the icon, then...