Fix small typo in readme (#6100)
Fix small typo in readme (#6100)

"databas" -> "database"
waynemunro/orleans,yevhen/orleans,ElanHasson/orleans,jason-bragg/orleans,galvesribeiro/orleans,amccool/orleans,hoopsomuah/orleans,jthelin/orleans,amccool/orleans,galvesribeiro/orleans,hoopsomuah/orleans,dotnet/orleans,dotnet/orleans,yevhen/orleans,ibondy/orleans,veikkoeeva/orleans,ElanHasson/orleans,waynemunro/orleans,ReubenBond/orleans,benjaminpetit/orleans,amccool/orleans,ibondy/orleans