Add google instructions link

Author: arimendelow

README.md

@@ -36,5 +36,5 @@ Additionally, because `RWJS_API_URL` is used by the web-side code, you'll need t
 After setting up both sides, you'll need to enable your chosen OAuth provider(s). Currently supported providers include:
 
 [Apple](https://github.com/spoonjoy/redwoodjs-dbauth-oauth/wiki/Enabling-Apple-as-an-OAuth-provider)
-[GitHub]()
-[Google]()
+[GitHub](https://github.com/spoonjoy/redwoodjs-dbauth-oauth/wiki/Enabling-GitHub-as-an-OAuth-provider)
+[Google](https://github.com/spoonjoy/redwoodjs-dbauth-oauth/wiki/Enabling-Google-as-an-OAuth-provider)