Deprecate references to portsnap - part 1: Handbook

[pauamma_gundo.com]

Summary

While there:

• replace a stray public address (assigned to someone as far as I can tell) in the Handbook jail example with a RFC1918 private address
• move a plural mark outside <filename>...</filename>
• update poudriere examples to refer to 11.4 instead of 10.4

Test Plan

• Examples tested by running them in a 11.4 VM
• Doc itself tested using lynx

[bcr]

The change looks good to me. Just a minor thing about portsnap options...

en_US.ISO8859-1/books/handbook/jails/chapter.xml

725 ↗

(On Diff #74915)

Can you change the "fetch extract" part into "auto" (which will extract if there is no prior ports tree and update an existing one)?

[pauamma_gundo.com]

• s/fetch update/auto/ at bcr's request.

[bcr]

Approved and will be committed in a short while... Thank you!