Clarifying that there is Git support on older VS versions.

[Taysser-Gherfal]

Requesting to update the first paragraph to clarify that Visual Studio had Git support before 16.8 and now we have a new Git experience.

• [x] I provide my work under the project license.
• [x] I grant such license of my work as is required for the purposes of future print editions to Ben Straub and Scott Chacon.