CC-4634: add containers ssh docs

[flakey5]

Summary

Adds documentation for ssh'ing into a container with wrangler

Wrangler PR: cloudflare/workers-sdk#10582

Screenshots (optional)

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The documentation style guide has been adhered to.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[emily-shen]

I think you'll also need to add the ssh command to https://developers.cloudflare.com/workers/wrangler/commands/

[github-actions]

Hey there, this pull request has been automatically marked as stale because it has not had recent activity. It will be auto-closed after and additional 10 days of inactivity. If you need it open for longer, add the label stale-exempt.

[github-actions]

Hey there, we've closed out this pull request because it's been stale for a while and there's been no additional action on it. If these changes are still relevant, open a new pull request (or flag to us in a GitHub issue).