Fix typo (#2578)
Fix typo (#2578)


jhamman/xarray,pydata/xarray,jhamman/xarray,markelg/xray,markelg/xray,shoyer/xarray,markelg/xray,pydata/xarray,shoyer/xarray,xray/xray,pydata/xarray,shoyer/xray,chunweiyuan/xarray,jhamman/xarray,jhamman/xray