Docs: Create lint rule for colons and spaces
Problem to solve
It seems that looking at how we use colons (:) in the documentation is a way we can find problematic formatting, or code that is in plaintext.
For example: !197302 (merged)
We should consider adding a vale rule that looks for patterns related to : use that suggests likely incorrect formatting.
This can also improve localization, as it's important to have one consistent standard of formatting the source documentation.