fix: correct invalid Compiler Playground URL in editors reference

[Copilot]

The Compiler Playground link in docs/src/content/docs/reference/editors.mdx was missing the /gh-aw/ base path, resulting in a 404.

• docs/src/content/docs/reference/editors.mdx: Fixed URL from https://github.github.com/editor/ → https://github.github.com/gh-aw/editor/, consistent with the site base configured in astro.config.mjs (site: 'https://github.github.com', base: '/gh-aw/').

Original prompt

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This section details on the original issue you should resolve

<issue_title>Editor Link is invalid</issue_title>
<issue_description>> @pelikhan This Link is invalid and looks like it should not have been included in the change

Originally posted by @jeremiah-snee-openx in 2739480</issue_description>

Comments on the Issue (you are @copilot in this section)

@pelikhan Fix link.

• Fixes Editor Link is invalid #18196

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[Copilot]

Pull request overview

Fixes a broken documentation link to the Compiler Playground by correcting the published site base path so it no longer 404s.

Changes:

• Updated the Compiler Playground URL to include the /gh-aw/ base path.

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