Fix typo in readme, specify that changing to another version of the zookeeper image will not work (#499)
diff --git a/helm/solr/README.md b/helm/solr/README.md
index 42bf165..dbc7730 100644
--- a/helm/solr/README.md
+++ b/helm/solr/README.md
@@ -164,7 +164,7 @@
| zk.address | string | | An existing ZooKeeper cluster address to use for Solr. Must be reachable within the Kubernetes cluster. |
| zk.externalAddress | string | | An existing ZooKeeper cluster address to use for Solr. Must be reachable within and outside the Kubernetes cluster. |
| zk.provided.replicas | int | `3` | The number of replicas to run for your ZooKeeper cluster. |
-| zk.provided.image.repository | string | `"pravega/zookeeper"` | The repository of the Solr image |
+| zk.provided.image.repository | string | `"pravega/zookeeper"` | The repository of the Zookeeper image. NB: The operator will only work with this repository. |
| zk.provided.image.tag | string | | The tag/version of Zookeeper to run. Generally leave this blank, so that the Zookeeper Operator can manage it. |
| zk.provided.image.pullPolicy | string | `"IfNotPresent"` | PullPolicy for the ZooKeeper image |
| zk.provided.image.imagePullSecret | string | | PullSecret for the ZooKeeper image |
