[KYUUBI #3562] Fix the outdate docs index

### _Why are the changes needed?_

change kerberized_kyuubi to kerberos since the docs file name is kerberos.md

### _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 #3562 from ulysses-you/fix-docs.

Closes #3562

615c7fc [ulysses-you] docs

Authored-by: ulysses-you <ulyssesyou18@gmail.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>
(cherry picked from commit 00aa49c)
Signed-off-by: Cheng Pan <chengpan@apache.org>

docs/client/advanced/index.rst

@@ -21,5 +21,5 @@ Client Commons
 
     configurations
     logging
-    kerberized_kyuubi
+    kerberos
     features/index