Move Sphinx directives out of See also (#8466)

* Move Sphinx directives out of `See also`

This is potentially using the `See also` to not render the links? (Does anyone know this better? It doesn't seem easy to build the docs locally...

* Update computation.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: Deepak Cherian <dcherian@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

xarray/core/computation.py

@@ -1142,6 +1142,8 @@ def apply_ufunc(
     dask.array.apply_gufunc
     xarray.map_blocks
 
+    Notes
+    -----
     :ref:`dask.automatic-parallelization`
         User guide describing :py:func:`apply_ufunc` and :py:func:`map_blocks`.