Merge pull request #236 from ageir/patch-1

Author: MGatner

README.md

@@ -70,6 +70,6 @@ Made with [contrib.rocks](https://contrib.rocks).
 The following articles/sites have been fundamental in shaping the security and best practices used
 within this library, in no particular order: 
 
-- [Google Cloud: 12 Best Practices For User Accounts](https://cloud.google.com/blog/products/gcp/12-best-practices-for-user-account)
+- [Google Cloud: 13 best practices for user account, authentication, and password management, 2021 edition](https://cloud.google.com/blog/products/identity-security/account-authentication-and-password-management-best-practices)
 - [NIST Digital Identity Guidelines](https://pages.nist.gov/800-63-3/sp800-63b.html)
 - [Implementing Secure User Authentication in PHP Applications with Long-Term Persistence (Login with "Remember Me" Cookies) ](https://paragonie.com/blog/2015/04/secure-authentication-php-with-long-term-persistence)