### _Why are the changes needed?_
Updated [kyuubi on kubernetes config section](https://kyuubi.readthedocs.io/en/master/deployment/kyuubi_on_kubernetes.html#config) to state <code> Kyuubi **does** not recommend using this way on Kubernetes</code>
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [ ] [Run test](https://kyuubi.readthedocs.io/en/master/contributing/code/testing.html#running-tests) locally before make a pull request
Closes#5086 from mans2singh/ISSUE-5085.
Closes#5086
5faf0df2e [mans2singh] [KYUUBI # 5085] Update config section based on review comments
df9f62f36 [mans2singh] [KYUUBI # 5085] Update config section of deploy on kubernetes
Authored-by: mans2singh <mans2singh@yahoo.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>
b04829a2fc