Fix a few typos and cosmetics inconsistencies

[markreidvfx]

Here are a few typos and cosmetics fixes I noticed when reading though the code.

[codecov-commenter]

Codecov Report

Merging #1416 (fe675cd) into main (0950f50) will not change coverage.
The diff coverage is 60.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1416   +/-   ##
=======================================
  Coverage   86.06%   86.06%           
=======================================
  Files         201      201           
  Lines       21062    21062           
  Branches     2461     2461           
=======================================
  Hits        18127    18127           
  Misses       2333     2333           
  Partials      602      602           

Flag	Coverage Δ
py-unittests	86.06% <60.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/opentimelineio/serializableObject.h	86.66% <ø> (ø)
...imelineio/opentimelineio-bindings/otio_anyVector.h	50.00% <0.00%> (ø)
...ntimelineio/opentimelineio-bindings/otio_imath.cpp	61.53% <ø> (ø)
...ntimelineio/opentimelineio-bindings/otio_utils.cpp	78.26% <0.00%> (ø)
src/py-opentimelineio/opentimelineio/hooks.py	100.00% <ø> (ø)
...-opentimelineio/opentimelineio/plugins/manifest.py	87.14% <ø> (ø)
...c/py-opentimelineio/opentimelineio/schema/track.py	100.00% <ø> (ø)
src/py-opentimelineio/opentimelineio/url_utils.py	85.71% <ø> (ø)
src/opentimelineio/errorStatus.cpp	55.17% <100.00%> (ø)
...timelineio/console/autogen_serialized_datamodel.py	76.98% <100.00%> (ø)

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