[SPARK-30426][SS][DOC] Fix the disorder of structured-streaming-kafka-integration page
[SPARK-30426][SS][DOC] Fix the disorder of structured-streaming-kafka-integration page

### What changes were proposed in this pull request?
Fix the disorder of `structured-streaming-kafka-integration` page caused by #23747.

### Why are the changes needed?
A typo messed up the HTML page.

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

### How was this patch tested?
Locally test by Jekyll.
Before:
![image](https://user-images.githubusercontent.com/4833765/71793803-6c0a1e80-3079-11ea-8fce-f0f94fd6929c.png)
After:
![image](https://user-images.githubusercontent.com/4833765/71793807-72989600-3079-11ea-9e12-f83437eeb7c0.png)

Closes #27098 from xuanyuanking/SPARK-30426.

Authored-by: Yuanjian Li <2d53d9b773e88f84fee6a6dbdff6a5bb5ed7b612@gmail.com>
Signed-off-by: Wenchen Fan <563f5923eae9a92c8a3f34a26b67fa348a303ed1@databricks.com>

gengliangwang/spark,spark-test/spark,kevinyu98/spark,maropu/spark,gengliangwang/spark,chuckchen/spark,apache/spark,maropu/spark,taroplus/spark,skonto/spark,zzcclp/spark,dongjoon-hyun/spark,dongjoon-hyun/spark,zero323/spark,ptkool/spark,vinodkc/spark,apache/spark,ConeyLiu/spark,shaneknapp/spark,kevinyu98/spark,spark-test/spark,HyukjinKwon/spark,chuckchen/spark,wzhfy/spark,shuangshuangwang/spark,srowen/spark,hvanhovell/spark,shuangshuangwang/spark,srowen/spark,ptkool/spark,vinodkc/spark,ConeyLiu/spark,HyukjinKwon/spark,milliman/spark,taroplus/spark,xuanyuanking/spark,ueshin/apache-spark,wangmiao1981/spark,kevinyu98/spark,HyukjinKwon/spark,jiangxb1987/spark,xuanyuanking/spark,ueshin/apache-spark,ptkool/spark,WeichenXu123/spark,hvanhovell/spark,ptkool/spark,holdenk/spark,wzhfy/spark,shaneknapp/spark,nchammas/spark,dbtsai/spark,taroplus/spark,HyukjinKwon/spark,nchammas/spark,vinodkc/spark,JoshRosen/spark,zero323/spark,zzcclp/spark,dongjoon-hyun/spark,maropu/spark,WeichenXu123/spark,ConeyLiu/spark,JoshRosen/spark,wzhfy/spark,taroplus/spark,ptkool/spark,apache/spark,HyukjinKwon/spark,taroplus/spark,milliman/spark,zzcclp/spark,hvanhovell/spark,WeichenXu123/spark,cloud-fan/spark,mahak/spark,kevinyu98/spark,dbtsai/spark,milliman/spark,zero323/spark,maropu/spark,dbtsai/spark,shuangshuangwang/spark,darionyaphet/spark,nchammas/spark,dongjoon-hyun/spark,goldmedal/spark,rednaxelafx/apache-spark,witgo/spark,holdenk/spark,darionyaphet/spark,wangyum/spark,shuangshuangwang/spark,ueshin/apache-spark,zero323/spark,gengliangwang/spark,apache/spark,cloud-fan/spark,zuotingbing/spark,ueshin/apache-spark,WeichenXu123/spark,hvanhovell/spark,chuckchen/spark,shaneknapp/spark,wangmiao1981/spark,xuanyuanking/spark,jiangxb1987/spark,maropu/spark,jiangxb1987/spark,wangyum/spark,dbtsai/spark,holdenk/spark,shuangshuangwang/spark,matthewfranglen/spark,rednaxelafx/apache-spark,witgo/spark,jiangxb1987/spark,dbtsai/spark,wangyum/spark,BryanCutler/spark,goldmedal/spark,chuckchen/spark,vinodkc/spark,wangyum/spark,zuotingbing/spark,zuotingbing/spark,goldmedal/spark,milliman/spark,mahak/spark,rednaxelafx/apache-spark,wangmiao1981/spark,mahak/spark,zzcclp/spark,srowen/spark,BryanCutler/spark,dongjoon-hyun/spark,rednaxelafx/apache-spark,zero323/spark,cloud-fan/spark,spark-test/spark,goldmedal/spark,shaneknapp/spark,JoshRosen/spark,wangyum/spark,vinodkc/spark,wangyum/spark,rednaxelafx/apache-spark,BryanCutler/spark,kevinyu98/spark,wangmiao1981/spark,JoshRosen/spark,mahak/spark,witgo/spark,hvanhovell/spark,cloud-fan/spark,rednaxelafx/apache-spark,jiangxb1987/spark,WeichenXu123/spark,hvanhovell/spark,zzcclp/spark,kevinyu98/spark,nchammas/spark,witgo/spark,wzhfy/spark,goldmedal/spark,zzcclp/spark,cloud-fan/spark,milliman/spark,BryanCutler/spark,apache/spark,mahak/spark,skonto/spark,WeichenXu123/spark,mahak/spark,wzhfy/spark,nchammas/spark,darionyaphet/spark,jiangxb1987/spark,skonto/spark,srowen/spark,ConeyLiu/spark,JoshRosen/spark,xuanyuanking/spark,wzhfy/spark,witgo/spark,milliman/spark,shuangshuangwang/spark,witgo/spark,dongjoon-hyun/spark,gengliangwang/spark,shuangshuangwang/spark,cloud-fan/spark,skonto/spark,apache/spark,xuanyuanking/spark,dongjoon-hyun/spark,JoshRosen/spark,chuckchen/spark,HyukjinKwon/spark,BryanCutler/spark,BryanCutler/spark,darionyaphet/spark,taroplus/spark,darionyaphet/spark,dbtsai/spark,zuotingbing/spark,skonto/spark,zero323/spark,ptkool/spark,spark-test/spark,maropu/spark,holdenk/spark,witgo/spark,spark-test/spark,wangmiao1981/spark,milliman/spark,skonto/spark,goldmedal/spark,wangyum/spark,chuckchen/spark,darionyaphet/spark,kevinyu98/spark,gengliangwang/spark,gengliangwang/spark,zzcclp/spark,BryanCutler/spark,ConeyLiu/spark,ptkool/spark,skonto/spark,maropu/spark,taroplus/spark,xuanyuanking/spark,goldmedal/spark,chuckchen/spark,JoshRosen/spark,zuotingbing/spark,wangmiao1981/spark,mahak/spark,ConeyLiu/spark,spark-test/spark,holdenk/spark,wzhfy/spark,shaneknapp/spark,zuotingbing/spark,spark-test/spark,darionyaphet/spark,gengliangwang/spark,ueshin/apache-spark,vinodkc/spark,vinodkc/spark,hvanhovell/spark,srowen/spark,ConeyLiu/spark,srowen/spark,wangmiao1981/spark,rednaxelafx/apache-spark,shaneknapp/spark,zero323/spark,jiangxb1987/spark,apache/spark,HyukjinKwon/spark,nchammas/spark,holdenk/spark,nchammas/spark,shaneknapp/spark,dbtsai/spark,WeichenXu123/spark,holdenk/spark,srowen/spark,xuanyuanking/spark,zuotingbing/spark,ueshin/apache-spark,ueshin/apache-spark,cloud-fan/spark