### _Why are the changes needed?_
- add docs in REST API for POST /batches with uploading resource, which was introduced in #4106 .
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [x] Add screenshots for manual tests if appropriate
- [ ] [Run test](https://kyuubi.readthedocs.io/en/master/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#4199 from bowenliang123/rest-batchupload-doc.
Closes#4199
957249d4 [liangbowen] add doc for POST /batches (with uploading resource)
Authored-by: liangbowen <liangbowen@gf.com.cn>
Signed-off-by: liangbowen <liangbowen@gf.com.cn>
cf0c495e5c
