Replace admonition markup in help texts

[edlerd]

Done

• add rules to replace admonition markup
• remove cleanup of {{snapshot_pattern_detail}}, was fixed upstream.

QA

1. Run the LXD-UI:
   • On the demo server via the link posted by @webteam-app below. This is only available for PRs created by collaborators of the repo. Ask @lorumic or @edlerd for access.
   • With a local copy of this branch, run as described here.
2. Perform the following QA steps:
   • Check project configuration > restrictions > device usage > disk devices > activate override and validate help text below the input
   • Check storage volume configuration > snapshots > pattern > activate override and validate help text below the input

[webteam-app]

Demo starting at https://lxd-ui-628.demos.haus

[mas-who]

code looks good, just waiting for demo to go up for QA.

[mas-who]

LGTM. 👍