docs: add Sonarqube Marketplace release steps

RELEASING.md

@@ -7,5 +7,16 @@ These are the general steps to release a new version of the plugin:
 the unreleased changes notes to the soon-to-be released version and create a new change note section for new unreleased changes.
 3. Open a pull request with the changes.
 4. Once the pull request is merged the release workflow will build the release version, create the tag and create a draft [Github release](https://docs.github.com/en/repositories/releasing-projects-on-github/about-releases) with the plugin JAR and change notes.
-5. Review the draft Github release and, if everything is ok, release it.
-6. All done :-). 
+5. Review the draft GitHub release and, if everything is ok, release it.
+
+### Sonarqube Marketplace
+
+After a new version is released, we need to [announce](https://community.sonarsource.com/t/deploying-to-the-marketplace/35236#announcing-new-releases-2) it on Sonarqube Marketplace.
+
+Follow the steps bellow to publish the new release on Sonarqube Marketplace:
+
+1. Fork [sonar-update-center.properties](https://github.com/SonarSource/sonar-update-center-properties) repository;
+2. Add the new version of the plugin on the [communitygosu.properties](https://github.com/SonarSource/sonar-update-center-properties/blob/master/communitygosu.properties);
+3. Create a pull request with your changes. [Example](https://github.com/SonarSource/sonar-update-center-properties/pull/490);
+4. Once a SonarSource representative review and approve your pull request, it will be automatically published to the marketplace;
+5. All done :-).

src/testIntegration/resources/projects/simple-gosu-project/README.md

@@ -29,7 +29,7 @@ The project contains the following issues:
 
 On the project root folder run:
 ```shell
-  ./gradlew sonar -Dsonar.host.url="[SONAR HOST URL]" -Dsonar.token="[AUTHORIZATION TOKEN]"
+  ./gradlew sonar -Dsonar.host.url="[SONAR HOST URL]" -Dsonar.login="[AUTHORIZATION TOKEN]"
 ```
 
 ### Running Scanner with Docker