Solve various documentation issues

[BENR0]

Solves some issues with tag "documentation".

• Closes DOC: broken link for geoview #1293
• Closes Documentation on storing area definitions has a broken fragment identifier link to pyresample #990
• Closes Broken-off sentence in cf_writer module documentation: "If a non-dimensional coordinate is identical for" #1120

[codecov]

Codecov Report

Merging #1697 (cf4d656) into main (25993ff) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1697   +/-   ##
=======================================
  Coverage   92.32%   92.32%           
=======================================
  Files         258      258           
  Lines       38125    38125           
=======================================
  Hits        35200    35200           
  Misses       2925     2925           

Flag	Coverage Δ
behaviourtests	4.84% <ø> (ø)
unittests	92.87% <ø> (ø)

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Impacted Files	Coverage Δ
satpy/resample.py	80.24% <ø> (ø)
satpy/writers/cf_writer.py	95.17% <ø> (ø)

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[coveralls]

Coverage remained the same at 92.818% when pulling cf4d656 on BENR0:gh_documentation_issues into 25993ff on pytroll:main.

[djhoese]

Thanks for this. Looks good to me. The website CI job failed because of an HTTP timeout when creating the environment. I've restarted it. Once that passes I'm ok with this being merged.