improve Key Management documentation following MarkdownLint - MD014

[normal-coder]

Summary

Resolves #221, #225

improve Key Management documentation.

When there are only commands in the code block, the $ sign is not needed

Reference from specification: https://github.com/DavidAnson/markdownlint/blob/v0.29.0/doc/md014.md

Release Note

None.

Documentation

This PR implements the doc change.

[netlify]

✅ Deploy Preview for docssigstore ready!

Name	Link
🔨 Latest commit	59e142b
🔍 Latest deploy log	https://app.netlify.com/sites/docssigstore/deploys/64e846986a27c500083663e5
😎 Deploy Preview	https://deploy-preview-218--docssigstore.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[ltagliaferri]

Hi @normal-coder — we are doing a code freeze of the docs site which we announced in the #general channel of our community's Slack as we are migrating to Hugo. These PRs will likely need to be rebased.

In any case, our Contributing guidelines note that an issue should be created prior to a PR. I happen to agree about the $ piece in commands as it makes copying and pasting more arduous, but it should be discussed with the community.

[normal-coder]

Hi @normal-coder — we are doing a code freeze of the docs site which we announced in the #general channel of our community's Slack as we are migrating to Hugo. These PRs will likely need to be rebased.

In any case, our Contributing guidelines note that an issue should be created prior to a PR. I happen to agree about the $ piece in commands as it makes copying and pasting more arduous, but it should be discussed with the community.

@ltagliaferri No problem, I re-checkout the branch locally and cherry-pick the changes to the latest code.