docs: synchronizing README from GitBook

README.md

@@ -115,6 +115,10 @@ For detailed information about the CLI, see the [CLI docs](https://docs.snyk.io/
 
 The Snyk CLI project is open-source, but Snyk does not encourage outside contributors.
 
+You may look into [design decisions for the Snyk CLI](https://github.com/snyk/snyk/blob/master/help/_about-this-project/README.md).
+
+The Snyk CLI repository is a monorepo that also covers other projects and tools, such as [@snyk/protect](https://github.com/snyk/snyk/tree/master/packages/snyk-protect), also available at [npm package for snyk-protect command](https://www.npmjs.com/package/@snyk/protect).
+
 ## Security
 
-For any security issues or concerns, see the [SECURITY.md](https://github.com/snyk/snyk/blob/main/SECURITY.md) file in the GitHub repository.
+For any security issues or concerns, see the [SECURITY.md](https://github.com/snyk/snyk/blob/master/SECURITY.md) file in the GitHub repository.