feat: incorporate `org-id` shortcode into content

Summary

A new {{< org-id >}} shortcode has been added to layer5io/academy-theme. This shortcode renders the current organization's UUID inline by reading it from the page's content path (content/<type>/<orgID>/...).

Desired Behavior

Wherever course or lab content directs learners to reference their organization ID — for example, when navigating the Meshery Cloud console, constructing API calls, or identifying their workspace — use {{< org-id >}} so the correct UUID is displayed automatically.

Usage:

Your organization ID is: {{</* org-id */>}}

Implementation

1. Review lab, module, and course intro pages for places that say "your organization," reference an org UUID, or direct learners to the cloud console.
2. Replace hardcoded IDs or placeholder text with {{< org-id >}}.
3. Add the shortcode to a content formatting example page (content/content-formatting-examples/academy-theme/org-id.md) to document its usage.

Acceptance Criteria

• {{< org-id >}} shortcode is used in at least one lab or module intro page.
• A formatting example page exists at content/content-formatting-examples/academy-theme/org-id.md.
• The shortcode renders the org UUID correctly when the page is inside a UUID-named directory.

Contributor Guide and Resources

• 📚 Instructions for contributing
• academy-example documentation site and source
• 🙋🏾🙋🏼 Questions: Layer5 Discussion Forum and Layer5 Community Slack