### What changes were proposed in this pull request?
Fixing the typos in SQL reference document.
### Why are the changes needed?
For user readability
### Does this PR introduce any user-facing change?
No
### How was this patch tested?
Tested manually.
Closes#26424 from jobitmathew/typo.
Authored-by: Jobit Mathew <jobit.mathew@huawei.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>