[Suggestion]: Make usage of virtualisation/virtualization consistent

There are multiple usages of each spelling throughout the documentation. For example, in the URL uses "virtualisation" but the page title uses "virtualization".

Start with the virtualisation documentation page linked in the issue, comparing its URL and page title, then search the documentation for both spellings. Done means the spelling is chosen consistently across the affected documentation and its URL or title no longer differs.

Written by the indexing model from the issue text.