[KYUUBI #4197][DOCS] Fix typo in a title of the Flink FTS Connector

### _Why are the changes needed?_

### _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.readthedocs.io/en/master/develop_tools/testing.html#running-tests) locally before make a pull request

Closes #4198 from a49a/fts-typo.

Closes #4197

306b16b [Luning Wang] [KYUUBI #4197][DOCS] Fix typo in a title of the Flink FTS Connector

Authored-by: Luning Wang <wang4luning@gmail.com>
Signed-off-by: liangbowen <liangbowen@gf.com.cn>
(cherry picked from commit af60f6a)
Signed-off-by: liangbowen <liangbowen@gf.com.cn>

docs/connector/flink/flink_table_store.rst

@@ -96,7 +96,7 @@ Taking ``Streaming Query`` as a example,
    SET 'execution.runtime-mode' = 'streaming';
    SELECT * FROM MyTable /*+ OPTIONS ('log.scan'='latest') */;
 
-Taking ``Rescale Bucket` as a example,
+Taking ``Rescale Bucket`` as a example,
 
 .. code-block:: sql