Fix links from Security tab of repository.

[TonyLovesDevOps]

These links to the signing keys work fine when you open the security.md file from within the docs/ directory, but they 404 when you click on the Security tab in the repository. This change should fix this.

[synfinatic]

isn't this change going to break the links for people who navigate to the page via the docs since the links are relative? https://synfinatic.github.io/aws-sso-cli/v1.17.0/security/

seems like we need to move the entire page and update mkdocs to find the new location.

[TonyLovesDevOps]

Good question. Adding /docs should make it relative to the root of the repository, so it should work on different forks, etc. I don't know about the impact on mkdocs but I'd hope it would be able to figure this out.

[synfinatic]

welp, linkinspector says it's fine so who am I to argue? let's find out.

[synfinatic]

Reverting. links on https://synfinatic.github.io/aws-sso-cli/develop/security/ are broken.

edit: users were directed to: https://synfinatic.github.io/docs/commit-sign-key.asc.md

[TonyLovesDevOps]

Fair enough. I agree that broken links on the docs page are worse than broken links on the security tab -- anyone there should be able to figure out where to get the keys they need, like I did.

[synfinatic]

FWIW, i'm open to something that fixes the security tab. Just without the negative side effects. Feel free to open another PR if you can fix mkdocs. You should be able to test locally via make serve-docs assuming you have docker installed.