handbook/wine: add Mizuma's source code URL, and small typos
- It's particularly interesting to know what games/apps are currently
"supported" through Mizuma, so it's a good idea to link the source
code URL (winetricks source code URL is also already mentioned.)
- Remove the word "some" from the synopsis. It's ambiguous to know
the meaning of "some" here, whereas Wine is intended (and does support)
a wide range of Windows applications out of the box.
- Use the word GitHub instead Github (ignorable).
Signed-off-by: rilysh <nightquick@proton.me>
Pull Request: <https://github.com/freebsd/freebsd-doc/pull/360