[SPARK-16568][SQL][DOCUMENTATION] update sql programming guide refreshTable API in python code
[SPARK-16568][SQL][DOCUMENTATION] update sql programming guide refreshTable API in python code

## What changes were proposed in this pull request?

update `refreshTable` API in python code of the sql-programming-guide.

This API is added in SPARK-15820

## How was this patch tested?

N/A

Author: WeichenXu <WeichenXu123@outlook.com>

Closes #14220 from WeichenXu123/update_sql_doc_catalog.

(cherry picked from commit 9674af6f6f81066139ea675de724f951bd0d49c9)
Signed-off-by: Reynold Xin <c9d35a384bc579d1c6c8c055f2a2b5c04e11b521@databricks.com>

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