[SPARK-36655][PYTHON] Add `versionadded` for API added in Spark 3.3.0
[SPARK-36655][PYTHON] Add `versionadded` for API added in Spark 3.3.0

### What changes were proposed in this pull request?

Add `versionadded` for API added in Spark 3.3.0: DataFrame.combine_first.

### Why are the changes needed?
That documents the version of Spark which added the described API.

### Does this PR introduce _any_ user-facing change?
No user-facing behavior change. Only the document of the affected API shows when it's introduced.

### How was this patch tested?
Manual test.

Closes #33901 from xinrong-databricks/version.

Authored-by: Xinrong Meng <f8e847d07d7307743be32495e91478c80c8e0110@databricks.com>
Signed-off-by: Takuya UESHIN <f070f8f0c50caeda5841963fc7b57e73e59dad56@databricks.com>

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