### _Why are the changes needed?_
`GET /batches/{batchId}` should be `GET /batches/${batchId}`
Affected versions 1.6/1.7/master
### _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/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#4627 from merrily01/master-typo.
Closes#4627
ac386f640 [maruilei] [Docs] Fix a typo in rest_api.md.
Authored-by: maruilei <maruilei@58.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>
(cherry picked from commit 6d8fe6c381)
Signed-off-by: Cheng Pan <chengpan@apache.org>
39df2d974a