Update entry for virtual and virtualized

[daobrien]

Refer to the corresponding entry in the Corp Style Guide.

[daobrien]

virtual, virtualized
"Virtual" is the preferred adjective. Use "virtualized" to indicate a component or concept previously existed in non-virtual (physical) form. (Note: We prefer to keep the American spelling of this word even in documents that are for audiences that use British English spellings. This is to avoid the visual inconsistency of talking about your "virtualisation" with "Red Hat Virtualization." Never change the product name spelling.)