add note on consistency of results for sys.segments queries (#7034)
add note on consistency of results for sys.segments queries (#7034)

* add doc

* change docs

* PR comments

* few more changes

himanshug/druid,Fokko/druid,jon-wei/druid,gianm/druid,deltaprojects/druid,leventov/druid,mghosh4/druid,mghosh4/druid,michaelschiff/druid,nishantmonu51/druid,knoguchi/druid,mghosh4/druid,implydata/druid,deltaprojects/druid,deltaprojects/druid,leventov/druid,himanshug/druid,jon-wei/druid,druid-io/druid,pjain1/druid,mghosh4/druid,himanshug/druid,gianm/druid,pjain1/druid,deltaprojects/druid,Fokko/druid,nishantmonu51/druid,Fokko/druid,implydata/druid,implydata/druid,pjain1/druid,monetate/druid,monetate/druid,mghosh4/druid,implydata/druid,leventov/druid,pjain1/druid,knoguchi/druid,monetate/druid,pjain1/druid,michaelschiff/druid,druid-io/druid,druid-io/druid,Fokko/druid,gianm/druid,knoguchi/druid,leventov/druid,jon-wei/druid,deltaprojects/druid,michaelschiff/druid,druid-io/druid,nishantmonu51/druid,gianm/druid,himanshug/druid,michaelschiff/druid,himanshug/druid,jon-wei/druid,gianm/druid,gianm/druid,jon-wei/druid,mghosh4/druid,Fokko/druid,monetate/druid,jon-wei/druid,mghosh4/druid,deltaprojects/druid,pjain1/druid,monetate/druid,michaelschiff/druid,jon-wei/druid,deltaprojects/druid,monetate/druid,knoguchi/druid,nishantmonu51/druid,implydata/druid,michaelschiff/druid,Fokko/druid,nishantmonu51/druid,druid-io/druid,leventov/druid,Fokko/druid,gianm/druid,implydata/druid,pjain1/druid,knoguchi/druid,monetate/druid,michaelschiff/druid,nishantmonu51/druid,nishantmonu51/druid