I'd like to customize the standard 404 error when a page isn't found so that the wording is different. Currently the following displays but I'd like to update the wording. However, I can say that I like the link to our documentation landing page and that there's a search box. (We are going through some growing pains from migrating from the Server to the Cloud.)
404 - Page not found
Looks like this page doesn't exist. Search below or visit the home page of xxx
<link to doc landing>
<search field>