Ensure README's Contributing section links to the right repository (

#155)

Currently links to a [deprecated repository](https://github.com/hazelcast/hazelcast-reference-manual?tab=readme-ov-file#deprecated-this-repository-has-been-deprecated-please-continue-to-httpsgithubcomhazelcastimdg-docs), when should link to this repository.

README.adoc

@@ -47,7 +47,7 @@ To automate some elements of the build process, this repository includes the fol
 
 If you want to add a change or contribute new content, simply submit a pull request to the `main` branch. The documentation site is set up to build on a push. For more detailed information about the site structure, see our {url-contribute}[contributing guide].
 
-To let us know about something that you'd like us to change, consider {url-org}/hazelcast-reference-manual/issues/new[creating an issue].
+To let us know about something that you'd like us to change, consider {url-org}/cloud-docs/issues/new[creating an issue].
 
 == License