message: fix one+1 numbering of clades
diff: @@ -60,7 +60,7 @@ export function CladeMarkTooltip({ cladeMark }: CladeMarkTooltipProps) {
  <Popover className="popover-mutation" target={id} placement="auto" isOpen hideArrow delay={0} fade={false}>
  <PopoverBody>
  <div>{`Clade: ${cladeName} `}</div>
  - <div>{`Position: ${pos + 1} `}</div>
  + <div>{`Position: ${pos} `}</div>
  <div>{`Nucleotide: ${nuc} `}</div>
  </PopoverBody>
  </Popover>
  