• Do not claim that we ship the very latest version of Perl in the base system.
• Update links to FreeBSD packages to use the 'Latest/pkgname.tgz' link so that we don't have to keep the version numbers updated.
• Expand some </> shorthand.
• Fix a few typos.

PR: docs/34884
Submitted by: Ceri <setantae@submonkey.net> (mostly)