Updater to testing environment name (#3253)
Updater to testing environment name (#3253)

The testing environment name has been updated to `xarray-tests` in the package and we should do this in the documentation as well.
jhamman/xray,jhamman/xarray,markelg/xray,pydata/xarray,pydata/xarray,jhamman/xarray,jhamman/xarray,shoyer/xarray,shoyer/xarray,markelg/xray,pydata/xarray,markelg/xray,xray/xray