Add Chrome Secret Menus to Learning section (#156)

Author: sparkyrider

readme.md

@@ -20,6 +20,7 @@
 - [Can I DevTools?](https://www.canidev.tools/) - Various workflows, documented. Also a weekly tips & tricks [newsletter](https://canidevtools.substack.com/).
 - [Web cheatcodes](https://codepo8.github.io/web-cheatcodes/) - Browser developer tools for non-developers.
 - [Dear Console](https://codepo8.github.io/dearconsole) - A collection of snippets to use in the browser console.
+- [Chrome Secret Menus](https://github.com/sparkyrider/chrome-secret-menus) - Comprehensive guide to internal pages and diagnostic tools in Chrome.
 
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