Update ShortGuid.cs

[vanillajonathan]

Explicitly declare property visibility.
Proper capitalization of Base64.
Proper punctuation.

[vanillajonathan]

@davetransom ping!

[davetransom]

Sorry @vanillajonathan, I forgot about this one when I didn't quite know how I should reply straight away.

The documentation corrections are worth accepting (and thank you), however, reorganising the struct is not something I'd merge as I've written it the way I want it.

I'll happily merge if you revert the stylistic changes.

[vanillajonathan]

But members of a class should be have theit member visibility explicitly declared, and if not explicitly declared as private, they are implicitly internal, and in this case I believe they should be private. Also private and internal members should be placed above public members, and non-static members should be placed above static members according to the Microsoft Framework Design Guidelines.

[davetransom]

Are you confusing default access modifiers for class (internal) vs members (private)?

My previous comment still stands.

[vanillajonathan]

Yes. I am confusing default access modifiers.

I updated the patch.