DOC: fix link to io.zarr (#5176)
DOC: fix link to io.zarr (#5176)

* DOC: fix link to io.zarr

* try ref

* Update xarray/core/dataset.py [skip-ci]

Co-authored-by: keewis <39a065c0f814f810a499b803da99b94c24527abc@users.noreply.github.com>

Co-authored-by: keewis <39a065c0f814f810a499b803da99b94c24527abc@users.noreply.github.com>
pydata/xarray,pydata/xarray,jhamman/xarray,markelg/xray,pydata/xarray,jhamman/xarray,jhamman/xarray,markelg/xray,markelg/xray