Update links to RC2

Author: maciejwalkowiak

README.md

@@ -8,7 +8,7 @@ For a deep dive into the project, refer to the Spring Cloud AWS documentation:
 
 | Version                    | Reference Docs                                                                                       | API Docs                                                                                |
 |----------------------------|------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------|
-| Spring Cloud AWS 3.0.0-RC1 | [Reference Docs](https://docs.awspring.io/spring-cloud-aws/docs/3.0.0-RC1/reference/html/index.html) | [API Docs](https://docs.awspring.io/spring-cloud-aws/docs/3.0.0-RC1/apidocs/index.html) | 
+| Spring Cloud AWS 3.0.0-RC2 | [Reference Docs](https://docs.awspring.io/spring-cloud-aws/docs/3.0.0-RC2/reference/html/index.html) | [API Docs](https://docs.awspring.io/spring-cloud-aws/docs/3.0.0-RC2/apidocs/index.html) | 
 | Spring Cloud AWS 2.4.4     | [Reference Docs](https://docs.awspring.io/spring-cloud-aws/docs/2.4.4/reference/html/index.html)     | [API Docs](https://docs.awspring.io/spring-cloud-aws/docs/2.4.4/apidocs/index.html)     | 
 | Spring Cloud AWS 2.3.5     | [Reference Docs](https://docs.awspring.io/spring-cloud-aws/docs/2.3.5/reference/html/index.html)     | [API Docs](https://docs.awspring.io/spring-cloud-aws/docs/2.3.5/apidocs/index.html)     |