lxc-start: add debug example

[Managor]

Checklist

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR contains at most 5 new pages.
• The PR is authored by me, or has been human-reviewed if it was created with AI or machine translation software.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known):
• Reference issue: #

[ivanbaluta]

I noticed line 20 in the existing file contains an lxc-stop command.

[Managor]

Yeah. I added it back then because it felt like it made sense to include it in the context. Definitely one of the first to cut from the page if and when the page starts to reach full size.