Update reference to dask distributed setup page

[mherbertson]

Updated the intersphinx reference to the dask deploying-python.rst

• Fully documented

[codecov]

Codecov Report

Merging #1991 (7e82780) into main (751d555) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1991   +/-   ##
=======================================
  Coverage   93.54%   93.54%           
=======================================
  Files         279      279           
  Lines       41322    41322           
=======================================
  Hits        38654    38654           
  Misses       2668     2668           

Flag	Coverage Δ
behaviourtests	4.78% <ø> (ø)
unittests	94.07% <ø> (ø)

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[coveralls]

Coverage remained the same at 94.005% when pulling 7e82780 on mherbertson:fix-multiscene-docs into 751d555 on pytroll:main.

[mraspaud]

LGTM! The sphinx build passes now, so merging. Thanks @mherbertson !