DM-39832: Clean up sphinx docs

[timj]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (fc13523) 85.61% compared to head (da85b31) 85.61%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #59   +/-   ##
=======================================
  Coverage   85.61%   85.61%           
=======================================
  Files          27       27           
  Lines        3949     3949           
  Branches      818      818           
=======================================
  Hits         3381     3381           
  Misses        441      441           
  Partials      127      127           

Impacted Files	Coverage Δ
.../resources/_resourceHandles/_baseResourceHandle.py	78.72% <ø> (ø)
.../resources/_resourceHandles/_fileResourceHandle.py	79.24% <ø> (ø)
.../resources/_resourceHandles/_httpResourceHandle.py	72.41% <ø> (ø)
...st/resources/_resourceHandles/_s3ResourceHandle.py	80.62% <ø> (ø)
python/lsst/resources/_resourcePath.py	95.86% <ø> (ø)
python/lsst/resources/utils.py	62.26% <ø> (ø)

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[TallJimbo]

<rant>
Ugh, I see so much of this in our future. I really wish Sphinx could just look at how we've imported symbols! </rant>