Fix name of FIDO token company

It's "Yubico", not "Yubicorp".

Also, the FIDO token isn't technically a YubiKey. Those have a lot more features related to one-time passwords.
The YubiKey NEO even lets you put your GPG keys on it!
Merge pull request #16 from Slix/patch-3

Fix name of FIDO token company