docs/sys-info: Update information and rework sentence phrasing
This notably add links to icinga checks and explicit some too implicit actions.
Test Plan
make -C docs happy
Migrated from D5342 (view on Phabricator)
Staging instance, all changes can be removed at any time
This notably add links to icinga checks and explicit some too implicit actions.
make -C docs happy
Migrated from D5342 (view on Phabricator)