docs: add note about not supporting clustered typesense

Author: samuelallan72

README.rst

@@ -36,6 +36,8 @@ Limitations
 
 It's not recommended to run high availability (clustered) Typesense on Kubernetes. See `typesense/typesense#465 <https://github.com/typesense/typesense/issues/465>` and `typesense/typesense#2049 <https://github.com/typesense/typesense/issues/2049>` for more information.
 
+This plugin does not support deploying a clustered Typesense server.
+
 Upgrading
 ---------
 If you upgrade this plugin or change the ``TYPESENSE_DOCKER_IMAGE`` setting, you may get a new version of Typesense.