Update README.md

README.md

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 ### Join our Discord! [![Discord](https://img.shields.io/discord/1102689410522284044.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)](https://discord.gg/8Hzbrnkr7E)
 
-Gitleaks is a tool for **detecting** secrets like passwords, API keys, and tokens in git repos, files, and whatever else you wanna throw at it via `stdin`.
+Gitleaks is a tool for **detecting** secrets like passwords, API keys, and tokens in git repos, files, and whatever else you wanna throw at it via `stdin`. If you wanna learn more about how the detection engine works check out this blog: [Regex is (almost) all you need](https://lookingatcomputer.substack.com/p/regex-is-almost-all-you-need).
+
 
 ```
 ➜  ~/code(master) gitleaks git -v