fix(terms): Add description on pages, update links

[cmp5987]

/kind cleanup /kind documentation

What this PR does / why we need it:

• Adds description to hosts/tasks/quests
• Changes nav bar items
• Changes links to tome now that the documentation exists
• Updates doc language on term page to match descriptions

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 71.71%. Comparing base (21ccdce) to head (ccd8918).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #672 +/- ## ======================================= Coverage 71.71% 71.71% ======================================= Files 175 175 Lines 12086 12086 ======================================= Hits 8668 8668 Misses 3203 3203 Partials 215 215 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.