Propose CLI command guidance in style guide

In Add information about glab deploy key commands (!194221 - merged), I'm proposing changes to the deploy-keys page. I want to mention glab CLI commands more regularly as part of GUI-focused subheadings.

We haven't defined how we want to do that, though, and I see a couple of ways we COULD do it.

Option 1: prepend with in-repo link

To do XYZ, run the glab deploy-key add CLI command, or in the UI:

• Pro: internal link checked more often
• Neutral: adds link early in the procedure
• Con: requires extra clicks if the user wants to see the docs for the command itself, as this link is more generic

Option 2: prepend with external link

To do XYZ, run the glab deploy-key add CLI command, or in the UI:

• Pro: more specific link
• Neutral: adds link early in the procedure
• Con: external links are checked less frequently

Option 3: append

We could also add a standalone line at the end of the procedure, saying something like

The GitLab CLI provides a glab deploy-key list command.

• Pro: keeps the introductory stem simpler
• Neutral: we could do the internal or external link
• Con: if we place the command mention at the end, it's not shown as an option when the user is starting the procedure

To do

Get feedback from other TWs, and create a style guide proposal.