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### _Why are the changes needed?_
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Closes https://github.com/apache/incubator-kyuubi/issues/1269
### _How was this patch tested?_
docs only
Closes#1270 from ulysses-you/kyuubi#1269.
Closes#1269
1cb99ef5 [ulysses-you] address comment
7a597e66 [ulysses-you] address comment
4b15c2c9 [ulysses-you] Online documentation section in the readme is outdated
Authored-by: ulysses-you <ulyssesyou18@gmail.com>
Signed-off-by: ulysses-you <ulyssesyou@apache.org>
936a532d2e