Fixing typos on the OpenPGP Best Practices page.
Removed wrong link (https cert validation instead hpks)
The provided link was to validate the https certificate instead the CA one. There is an OpenPGP signature for the CA cert, but that will mean you have to trust the issuer's OpenPGP key. If you think this is ok you can check the links at the end of https://sks-keyservers.net/overview-of-pools.php
Trying to use OpenPGP related to the protocol and GnuPG related to the software.
Merge pull request #92 from bruo/master

Updates to OpenPGP best practices