docs: add gerrit to operator list and additional enhancements (#3539)

Signed-off-by: Attila Mészáros <a_meszaros@apple.com>

Author: csviri

README.md

@@ -70,15 +70,16 @@ project, as shown below:
 - [kroxylicious](https://github.com/kroxylicious/kroxylicious/tree/main/kroxylicious-kubernetes/kroxylicious-operator) Kafka proxy operator
 - [Debezium Operator](https://github.com/debezium/debezium-operator): Debezium Operator adds Change-Data-Capture capabilities to your Kubernetes or OpenShift cluster by providing an easy way to run and manage [Debezium Server](https://debezium.io/documentation/reference/stable/operations/debezium-server.html) instances.
 - [Keycloak operator](https://github.com/keycloak/keycloak/tree/main/operator): the official Keycloak operator, built with Quarkus and JOSDK.
-- [Apache Hive Kubernetes Operator](https://github.com/apache/hive/tree/master/packaging/src/kubernetes/src/java/org/apache/hive/kubernetes/operator)
+- [Apache Hive Kubernetes Operator](https://github.com/apache/hive/tree/master/packaging/src/kubernetes/src/java/org/apache/hive/kubernetes/operator) for the data warehouse system
 - [OpenMetadata Operator](https://github.com/open-metadata/OpenMetadata/tree/main/openmetadata-k8s-operator) for AI context, data cataloging, and metadata management service
 - [Strimzi Access operator](https://github.com/strimzi/kafka-access-operator). While the core Strimzi operator development predates  
   JOSDK, but new components like the Access operator is using the framework.
 - [Wanaku](https://github.com/wanaku-ai/wanaku/tree/main/apps/wanaku-operator) MCP Router Operator
-- [Apicurio Registry Operator](https://github.com/Apicurio/apicurio-registry/tree/main/operator) 
+- [Apicurio Registry Operator](https://github.com/Apicurio/apicurio-registry/tree/main/operator) to run the registry
 - [Kaap](https://github.com/datastax/kaap) autoscaling Operator for Apache Pulsar
 - [EureKubeOperator](https://medium.com/@heesuk.dev/implementing-kubernetes-operator-for-eureka-service-discovery-integration-by-java-operator-sdk-d21d8087c38e): integrates service discovery of Eureka and Kubernetes using the framework - developed by 11street. It is not released as an open source yet but is very interesting to read about this problem and how it is solved by an operator written with JOSDK.
 - [Locust k8s operator](https://github.com/AbdelrhmanHamouda/locust-k8s-operator): Cloud native solution to run performance tests on any Kubernetes cluster.
+- [Gerrit Operator](https://github.com/GerritCodeReview/k8s-gerrit) for running the code review tool
 - [ExposedApp operator](https://github.com/halkyonio/exposedapp-rhdblog): a sample operator
   written to illustrate JOSDK concepts and its Quarkus extension in the ["Write Kubernetes
   Operators in Java with the Java Operator SDK" blog series](https://developers.redhat.com/articles/2022/02/15/write-kubernetes-java-java-operator-sdk#).