[SPARK-40312][CORE][DOCS] Add missing configuration documentation in Spark History Server
[SPARK-40312][CORE][DOCS] Add missing configuration documentation in Spark History Server

### What changes were proposed in this pull request?
Add the following configuration item description.
`spark.history.store.hybridStore.diskBackend`
`spark.history.fs.update.batchSize`

### Why are the changes needed?
`monitoring.md`
https://spark.apache.org/docs/latest/monitoring.html
Some new configuration items are missing.

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

### How was this patch tested?

Closes #37769 from cxzl25/SPARK-40312.

Authored-by: sychen <9c24fda64d1c040b8d56df83ca9e6c6a7222ff4f@ctrip.com>
Signed-off-by: Yuming Wang <a045e9e381e8d6ed98f3af6ea924f96c8dd7fbad@ebay.com>

holdenk/spark,hvanhovell/spark,wangyum/spark,gengliangwang/spark,mahak/spark,HyukjinKwon/spark,dongjoon-hyun/spark,hvanhovell/spark,mahak/spark,apache/spark,hvanhovell/spark,gengliangwang/spark,mahak/spark,witgo/spark,srowen/spark,holdenk/spark,holdenk/spark,zzcclp/spark,vinodkc/spark,HyukjinKwon/spark,wangyum/spark,hvanhovell/spark,holdenk/spark,witgo/spark,witgo/spark,hvanhovell/spark,mahak/spark,apache/spark,wangyum/spark,zzcclp/spark,gengliangwang/spark,zzcclp/spark,zzcclp/spark,mahak/spark,gengliangwang/spark,shaneknapp/spark,dongjoon-hyun/spark,ueshin/apache-spark,ueshin/apache-spark,mahak/spark,HyukjinKwon/spark,srowen/spark,dongjoon-hyun/spark,dongjoon-hyun/spark,ueshin/apache-spark,hvanhovell/spark,mahak/spark,wangyum/spark,vinodkc/spark,holdenk/spark,hvanhovell/spark,gengliangwang/spark,wangyum/spark,witgo/spark,zzcclp/spark,holdenk/spark,srowen/spark,srowen/spark,shaneknapp/spark,dongjoon-hyun/spark,dongjoon-hyun/spark,srowen/spark,witgo/spark,vinodkc/spark,shaneknapp/spark,apache/spark,ueshin/apache-spark,ueshin/apache-spark,vinodkc/spark,shaneknapp/spark,gengliangwang/spark,holdenk/spark,wangyum/spark,ueshin/apache-spark,dongjoon-hyun/spark,gengliangwang/spark,vinodkc/spark,witgo/spark,ueshin/apache-spark,shaneknapp/spark,zzcclp/spark,shaneknapp/spark,shaneknapp/spark,vinodkc/spark,apache/spark,vinodkc/spark,HyukjinKwon/spark,zzcclp/spark,HyukjinKwon/spark,apache/spark,HyukjinKwon/spark,wangyum/spark,witgo/spark,srowen/spark,HyukjinKwon/spark,srowen/spark,apache/spark,apache/spark