Update link to Arch Wiki

Fix typos

Remove old hkp-cacert option from dirmngr.conf

Use bash for fenced code block

Change order of cmdline options for consistency

Update key servers section

Update pinentry-program to pinentry-gnome3

Update gpg.sh script

Remove unused options in gpg.conf

Remove deprecated option in gpg.conf

Fix order of gpg option --output

private key == secret key.

Small update in README file.

Updated headers in config files.

Added new example on renewing keys.