Documentation C++ tab eats whitespace in prototypes

[jfpanisset]

When looking at a documentation page such as:

https://opencolorio.readthedocs.io/en/latest/api/colorspace.html

If you switch from the default Python to the C++ tab, function prototypes have most of the whitespace stripped away, for instance:

constchar*getName()constnoexcept

I can reproduce this on both Chrome and Firefox on macOS (current versions).

[jessey-git]

Unsure how to bump this task up to get on the radar but it is indeed quite annoying.

[remia]

This seems to be an old issue of sphinx, as discussed in https://github.com/michaeljones/breathe/issues/655, https://github.com/readthedocs/sphinx_rtd_theme/issues/694 and probably many others.

From what I read, it should have been fixed in sphinx 4, but for some reasons our RTD builds seems to use outdated sphinx 2 versions when I looked at the log. I never used RTD and I didn't saw any configuration file at OCIO root, are we using RTD admin panel to configure it? The recommended way seems to be the configuration file now.