minor: comment for xtr_releasenotes-gen.sh
minor: comment for xtr_releasenotes-gen.sh

MEZk/checkstyle,romani/checkstyle,liscju/checkstyle,jochenvdv/checkstyle,sirdis/checkstyle,jonmbake/checkstyle,MEZk/checkstyle,sirdis/checkstyle,ilanKeshet/checkstyle,rnveach/checkstyle,sirdis/checkstyle,bansalayush/checkstyle,jonmbake/checkstyle,bansalayush/checkstyle,checkstyle/checkstyle,jochenvdv/checkstyle,checkstyle/checkstyle,MEZk/checkstyle,rnveach/checkstyle,izishared/checkstyle,rnveach/checkstyle,sabaka/checkstyle,romani/checkstyle,rnveach/checkstyle,jonmbake/checkstyle,romani/checkstyle,liscju/checkstyle,sharang108/checkstyle,jochenvdv/checkstyle,checkstyle/checkstyle,bansalayush/checkstyle,checkstyle/checkstyle,nikhilgupta23/checkstyle,AkshitaKukreja30/checkstyle,romani/checkstyle,liscju/checkstyle,ilanKeshet/checkstyle,romani/checkstyle,AkshitaKukreja30/checkstyle,ilanKeshet/checkstyle,sharang108/checkstyle,izishared/checkstyle,romani/checkstyle,checkstyle/checkstyle,nikhilgupta23/checkstyle,AkshitaKukreja30/checkstyle,sabaka/checkstyle,sabaka/checkstyle,sharang108/checkstyle,rnveach/checkstyle,rnveach/checkstyle,nikhilgupta23/checkstyle,checkstyle/checkstyle,izishared/checkstyle