Update README.md

Author: HazAT

packages/react/README.md

@@ -9,7 +9,7 @@
 
 ## Links
 
-- [Official SDK Docs](https://docs.sentry.io/quickstart/)
+- [Official SDK Docs](https://docs.sentry.io/platforms/javascript/guides/react/)
 - [TypeDoc](http://getsentry.github.io/sentry-javascript/)
 
 ## General