### _Why are the changes needed?_
Icon url in Helm Chart.yaml is not a real image url.
### _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
- [X] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#2979 from hddong/fix-helm-icon.
Closes#2979
6b0fe04c [hongdongdong] Fix helm icon url
Authored-by: hongdongdong <hongdongdong@cmss.chinamobile.com>
Signed-off-by: hongdongdong <hongdongdong@cmss.chinamobile.com>
cfe380ae0b