<!--
Thanks for sending a pull request!
Here are some tips for you:
1. If this is your first time, please read our contributor guidelines: https://kyuubi.readthedocs.io/en/latest/community/contributions.html
2. If the PR is related to an issue in https://github.com/apache/incubator-kyuubi/issues, add '[KYUUBI #XXXX]' in your PR title, e.g., '[KYUUBI #XXXX] Your PR title ...'.
3. If the PR is unfinished, add '[WIP]' in your PR title, e.g., '[WIP][KYUUBI #XXXX] Your PR title ...'.
-->
### _Why are the changes needed?_
<!--
Please clarify why the changes are needed. For instance,
1. If you add a feature, you can talk about the use case of it.
2. If you fix a bug, you can clarify why it is a bug.
-->
Fix the jdbc connection url format doc.
In fact, the kyuubiConfs part and kyuubiVars part should have the same effect.
But it is better to split the engine initialization conf and runtime vars to two parts, so here I do not modify these two parts.
### _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.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#1831 from turboFei/jdbc_docs.
Closes#1831
40288282 [Fei Wang] Update the docs for jdbc url
Authored-by: Fei Wang <fwang12@ebay.com>
Signed-off-by: Kent Yao <yao@apache.org>
8bd7b5aae4