[MISC] Adding references to Apache ZooKeeper project (#165)

Author: deusebio

README.md

@@ -13,7 +13,7 @@ The ZooKeeper Operator can be found on [Charmhub](https://charmhub.io/zookeeper)
 - Server-Server and Client-Server authentication both enabled by default
 - Access control management supported with user-provided ACL lists.
 
-The ZooKeeper Operator uses the latest upstream ZooKeeper binaries released by the The Apache Software Foundation that come with Kafka, made available using the [`zookeeper` snap](https://snapcraft.io/zookeeper) distributed by Canonical.
+Apache ZooKeeper is a free, open source software project by the Apache Software Foundation. Users can find out more at the [ZooKeeper project page](https://zookeeper.apache.org/).
 
 ## Requirements
 

metadata.yaml

@@ -1,17 +1,21 @@
 # Copyright 2024 Canonical Ltd.
 # See LICENSE file for licensing details.
 name: zookeeper
-display-name: Charmed Zookeeper
+display-name: Charmed Apache Zookeeper
 description: |
   ZooKeeper is a centralized service for maintaining configuration information, naming,
   providing distributed synchronization, and providing group services.
+  
+  Apache ZooKeeper is a free, open source software project by the Apache Software Foundation. 
+  Users can find out more at the [ZooKeeper project page](https://zookeeper.apache.org/).
 summary: Charmed ZooKeeper VM Operator
 source: https://github.com/canonical/zookeeper-operator
 issues: https://github.com/canonical/zookeeper-operator/issues
 website:
   - https://charmhub.io/zookeeper
   - https://github.com/canonical/zookeeper-operator
   - https://matrix.to/#/%23charmhub-data-platform%3Aubuntu.com
+  - https://zookeeper.apache.org/
 maintainers:
   - Canonical Data Platform <data-platform@lists.launchpad.net>
 series: