docs: document alternative for nested inner hits source
docs: document alternative for nested inner hits source

Closes #24110

strapdata/elassandra,coding0011/elasticsearch,gingerwizard/elasticsearch,sneivandt/elasticsearch,s1monw/elasticsearch,LeoYao/elasticsearch,robin13/elasticsearch,umeshdangat/elasticsearch,strapdata/elassandra,mohit/elasticsearch,alexshadow007/elasticsearch,robin13/elasticsearch,mohit/elasticsearch,markwalkom/elasticsearch,fred84/elasticsearch,scorpionvicky/elasticsearch,vroyer/elasticassandra,wenpos/elasticsearch,nknize/elasticsearch,naveenhooda2000/elasticsearch,vroyer/elasticassandra,s1monw/elasticsearch,naveenhooda2000/elasticsearch,ThiagoGarciaAlves/elasticsearch,gingerwizard/elasticsearch,rajanm/elasticsearch,uschindler/elasticsearch,coding0011/elasticsearch,GlenRSmith/elasticsearch,LeoYao/elasticsearch,mohit/elasticsearch,lks21c/elasticsearch,gingerwizard/elasticsearch,mjason3/elasticsearch,scorpionvicky/elasticsearch,gfyoung/elasticsearch,robin13/elasticsearch,scorpionvicky/elasticsearch,lks21c/elasticsearch,GlenRSmith/elasticsearch,scorpionvicky/elasticsearch,naveenhooda2000/elasticsearch,shreejay/elasticsearch,pozhidaevak/elasticsearch,qwerty4030/elasticsearch,gfyoung/elasticsearch,Stacey-Gammon/elasticsearch,LeoYao/elasticsearch,uschindler/elasticsearch,maddin2016/elasticsearch,naveenhooda2000/elasticsearch,robin13/elasticsearch,ThiagoGarciaAlves/elasticsearch,kalimatas/elasticsearch,scorpionvicky/elasticsearch,maddin2016/elasticsearch,lks21c/elasticsearch,coding0011/elasticsearch,nknize/elasticsearch,shreejay/elasticsearch,wangtuo/elasticsearch,fred84/elasticsearch,pozhidaevak/elasticsearch,HonzaKral/elasticsearch,uschindler/elasticsearch,maddin2016/elasticsearch,nezirus/elasticsearch,scottsom/elasticsearch,lks21c/elasticsearch,masaruh/elasticsearch,uschindler/elasticsearch,LeoYao/elasticsearch,wenpos/elasticsearch,strapdata/elassandra,vroyer/elassandra,gfyoung/elasticsearch,gingerwizard/elasticsearch,nknize/elasticsearch,kalimatas/elasticsearch,maddin2016/elasticsearch,mjason3/elasticsearch,nknize/elasticsearch,nknize/elasticsearch,qwerty4030/elasticsearch,jimczi/elasticsearch,Stacey-Gammon/elasticsearch,LeoYao/elasticsearch,wenpos/elasticsearch,ThiagoGarciaAlves/elasticsearch,ThiagoGarciaAlves/elasticsearch,kalimatas/elasticsearch,jimczi/elasticsearch,masaruh/elasticsearch,vroyer/elassandra,scottsom/elasticsearch,nezirus/elasticsearch,coding0011/elasticsearch,nezirus/elasticsearch,gfyoung/elasticsearch,scottsom/elasticsearch,s1monw/elasticsearch,GlenRSmith/elasticsearch,markwalkom/elasticsearch,uschindler/elasticsearch,jimczi/elasticsearch,sneivandt/elasticsearch,wangtuo/elasticsearch,strapdata/elassandra,mohit/elasticsearch,rajanm/elasticsearch,qwerty4030/elasticsearch,qwerty4030/elasticsearch,gingerwizard/elasticsearch,wenpos/elasticsearch,umeshdangat/elasticsearch,rajanm/elasticsearch,brandonkearby/elasticsearch,maddin2016/elasticsearch,Stacey-Gammon/elasticsearch,naveenhooda2000/elasticsearch,mjason3/elasticsearch,alexshadow007/elasticsearch,sneivandt/elasticsearch,Stacey-Gammon/elasticsearch,wangtuo/elasticsearch,gingerwizard/elasticsearch,kalimatas/elasticsearch,shreejay/elasticsearch,markwalkom/elasticsearch,alexshadow007/elasticsearch,brandonkearby/elasticsearch,brandonkearby/elasticsearch,alexshadow007/elasticsearch,GlenRSmith/elasticsearch,nezirus/elasticsearch,sneivandt/elasticsearch,LeoYao/elasticsearch,umeshdangat/elasticsearch,alexshadow007/elasticsearch,HonzaKral/elasticsearch,GlenRSmith/elasticsearch,strapdata/elassandra,brandonkearby/elasticsearch,lks21c/elasticsearch,sneivandt/elasticsearch,qwerty4030/elasticsearch,shreejay/elasticsearch,HonzaKral/elasticsearch,robin13/elasticsearch,mohit/elasticsearch,s1monw/elasticsearch,LeoYao/elasticsearch,jimczi/elasticsearch,umeshdangat/elasticsearch,fred84/elasticsearch,mjason3/elasticsearch,fred84/elasticsearch,brandonkearby/elasticsearch,rajanm/elasticsearch,jimczi/elasticsearch,shreejay/elasticsearch,mjason3/elasticsearch,ThiagoGarciaAlves/elasticsearch,masaruh/elasticsearch,umeshdangat/elasticsearch,wenpos/elasticsearch,s1monw/elasticsearch,vroyer/elasticassandra,Stacey-Gammon/elasticsearch,HonzaKral/elasticsearch,rajanm/elasticsearch,fred84/elasticsearch,pozhidaevak/elasticsearch,gfyoung/elasticsearch,coding0011/elasticsearch,markwalkom/elasticsearch,wangtuo/elasticsearch,kalimatas/elasticsearch,pozhidaevak/elasticsearch,scottsom/elasticsearch,ThiagoGarciaAlves/elasticsearch,rajanm/elasticsearch,vroyer/elassandra,masaruh/elasticsearch,pozhidaevak/elasticsearch,markwalkom/elasticsearch,masaruh/elasticsearch,scottsom/elasticsearch,wangtuo/elasticsearch,markwalkom/elasticsearch,gingerwizard/elasticsearch,nezirus/elasticsearch