[SPARK-36791][DOCS] Fix spelling mistakes in running-on-yarn.md file where JHS_POST should be JHS_HOST
[SPARK-36791][DOCS] Fix spelling mistakes in running-on-yarn.md file where JHS_POST should be JHS_HOST

### What changes were proposed in this pull request?
The PR fixes SPARK-36791 by replacing JHS_POST with JHS_HOST

### Why are the changes needed?
There are spelling mistakes in running-on-yarn.md file where JHS_POST should be JHS_HOST

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

### How was this patch tested?
Not needed for docs

Closes #34031 from jiaoqingbo/jiaoqingbo.

Authored-by: jiaoqb <f58261513bb9078fc385cf486d3087a653849222@asiainfo.com>
Signed-off-by: Hyukjin Kwon <2680965ad5aae29275c8fb10150cb10f5554e78b@apache.org>

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