[Bf-committers] Style Guide Updated for Code Comments

[Campbell Barton]

Hi, the code-style docs [0] were recently updated based on T81452 [1]

This mainly formalizes what's already done in a majority of the code,
if you're actively developing & committing code it's worth checking.

[0]: https://wiki.blender.org/wiki/Style_Guide/C_Cpp#Comments
[1]: https://developer.blender.org/T81452

-- 
- Campbell