sysutils/pfetch: Update to 1.6.0

Changes since 1.5.0:

1.6.0

What's Changed

• Fix parameter substitution on BSD by @merdely in #48
• Adding a man page by @danielhejduk in #51
• Fixed typos by @polluks in #52 and #53
• Support custom ASCII art
• Proper error when uname is unavailible

New Contributors

• @merdely made their first contribution in #48

Full Changelog: https://github.com/Un1q32/pfetch/compare/1.5.0...1.6.0