docs[cli]: fix display for code and typos

[stanimirovv]

The commands and example code inseveral places aren't displayed correctly on the website.

This PR will fix that.

Example:

Should be highlighted and displayed properlly with new lines and whitespace

[ivan-tymoshenko]

Thanks for your PR. This page is generated automatically by https://github.com/platformatic/platformatic/blob/main/scripts/gen-cli-doc.mjs.

Please make sure that your changes won't be rewritten after cli changes.

[stanimirovv]

Good point, I hadn't noticed that it is dynamically generated.
I will test and make adjustments if needed.

[stanimirovv]

@ivan-tymoshenko oh yeah it is deffinetly overwridden.
I will apply the changes in a few hours and ping you when the PR is ready for rereview.

The ball is in my court :)

[stanimirovv]

Changes are applied.

[ivan-tymoshenko]

All txt files in the db/help are CLI help command output. The ideal solution would be to wrap inserts in the script.

I'm ok with markdown example annotations in the CLI output.

[mcollina]

lgtm