Webpage mentions hyper-v as supported

### problem

if you go to https://cloudstack.apache.org/about, the first bulleted list item mentions Hyper-v as supported host.

### versions

The current public webpage

### The steps to reproduce the bug

1. Web browse to https://cloudstack.apache.org/about
2. Notice mention of Hyper-v in first bulleted list.
3.
...

### What to do about it?

Either reinstate support for Hyper-V as an available host type, or remove the mention from the page.