Revise issue template
Revise issue template

This commit revises the issue template, hoping to make it clearer that
following the guidelines is a really good thing to do.

Relates #24470

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