Update README.md

Author: spavlusieva

README.md

@@ -48,9 +48,11 @@ See [CHANGELOG](CHANGELOG.md).
 
 ## Contributing
 
-`oci-service-broker` is an open source project. See [CONTRIBUTING](CONTRIBUTING.md) for details.
+This project welcomes contributions from the community. Before submitting a pull request, please [review our contribution guide](./CONTRIBUTING.md)
 
-Oracle gratefully acknowledges the contributions to `oci-service-broker` that have been made by the community.
+## Security
+
+Please consult the [security guide](./SECURITY.md) for our responsible security vulnerability disclosure process
 
 ## License