[SPARK-36657][SQL] Update comment in 'gen-sql-config-docs.py'
[SPARK-36657][SQL] Update comment in 'gen-sql-config-docs.py'

### What changes were proposed in this pull request?
This PR aims to update comments in `gen-sql-config-docs.py`.

### Why are the changes needed?
To make it up to date according to Spark version 3.2.0 release.

### Does this PR introduce _any_ user-facing change?
No.

### How was this patch tested?
N/A.

Closes #33902 from williamhyun/fixtool.

Authored-by: William Hyun <c824fe0afe16857dd6f587aa7c4044d2642d60fb@apache.org>
Signed-off-by: Dongjoon Hyun <6ff48b33cbb828151035af58a92f18a39f1d1036@apache.org>

HyukjinKwon/spark,witgo/spark,dongjoon-hyun/spark,wangyum/spark,nchammas/spark,zzcclp/spark,rednaxelafx/apache-spark,zero323/spark,holdenk/spark,JoshRosen/spark,nchammas/spark,JoshRosen/spark,mahak/spark,vinodkc/spark,chuckchen/spark,witgo/spark,srowen/spark,taroplus/spark,xuanyuanking/spark,JoshRosen/spark,zzcclp/spark,shaneknapp/spark,hvanhovell/spark,zero323/spark,HyukjinKwon/spark,srowen/spark,zero323/spark,mahak/spark,chuckchen/spark,chuckchen/spark,dongjoon-hyun/spark,srowen/spark,xuanyuanking/spark,JoshRosen/spark,mahak/spark,apache/spark,srowen/spark,ueshin/apache-spark,holdenk/spark,srowen/spark,apache/spark,witgo/spark,xuanyuanking/spark,mahak/spark,vinodkc/spark,mahak/spark,srowen/spark,hvanhovell/spark,rednaxelafx/apache-spark,witgo/spark,zero323/spark,cloud-fan/spark,apache/spark,zzcclp/spark,wangyum/spark,ueshin/apache-spark,HyukjinKwon/spark,cloud-fan/spark,dongjoon-hyun/spark,wangyum/spark,witgo/spark,gengliangwang/spark,ueshin/apache-spark,srowen/spark,shaneknapp/spark,taroplus/spark,rednaxelafx/apache-spark,chuckchen/spark,zzcclp/spark,taroplus/spark,nchammas/spark,WeichenXu123/spark,shaneknapp/spark,cloud-fan/spark,WeichenXu123/spark,HyukjinKwon/spark,hvanhovell/spark,xuanyuanking/spark,xuanyuanking/spark,zero323/spark,taroplus/spark,gengliangwang/spark,zzcclp/spark,zzcclp/spark,shaneknapp/spark,apache/spark,gengliangwang/spark,cloud-fan/spark,wangyum/spark,chuckchen/spark,cloud-fan/spark,ueshin/apache-spark,xuanyuanking/spark,ueshin/apache-spark,nchammas/spark,zzcclp/spark,gengliangwang/spark,chuckchen/spark,dongjoon-hyun/spark,mahak/spark,ueshin/apache-spark,HyukjinKwon/spark,holdenk/spark,wangyum/spark,gengliangwang/spark,shaneknapp/spark,WeichenXu123/spark,apache/spark,shaneknapp/spark,holdenk/spark,taroplus/spark,witgo/spark,rednaxelafx/apache-spark,ueshin/apache-spark,WeichenXu123/spark,wangyum/spark,witgo/spark,rednaxelafx/apache-spark,cloud-fan/spark,shaneknapp/spark,hvanhovell/spark,JoshRosen/spark,dongjoon-hyun/spark,zero323/spark,WeichenXu123/spark,mahak/spark,dongjoon-hyun/spark,taroplus/spark,apache/spark,vinodkc/spark,JoshRosen/spark,apache/spark,cloud-fan/spark,hvanhovell/spark,gengliangwang/spark,taroplus/spark,JoshRosen/spark,wangyum/spark,holdenk/spark,nchammas/spark,nchammas/spark,nchammas/spark,vinodkc/spark,holdenk/spark,rednaxelafx/apache-spark,hvanhovell/spark,vinodkc/spark,chuckchen/spark,rednaxelafx/apache-spark,xuanyuanking/spark,HyukjinKwon/spark,HyukjinKwon/spark,zero323/spark,WeichenXu123/spark,vinodkc/spark,hvanhovell/spark,dongjoon-hyun/spark,holdenk/spark,vinodkc/spark,gengliangwang/spark,WeichenXu123/spark