[api-documenter] Fix return block rendering for page markdown

[colincasey]

Summary

Fixes rendering of the "**Returns:**" markdown in generated page documentation for a function.

Details

Noticed that a missing line break was causing the Returns: section on the markdown output for a function to be rendered incorrectly. You can see an example of this here.

The markdown is correct (**Returns:**) but because there is no line break between the end of the parameter table and the aforementioned markdown content, it is not treated as a new paragraph and is instead rendered as "**Returns:**" instead of "Returns:".

This is fixed by adding the required line break to the generated markdown content.

How it was tested

I rebuild the api-documenter with the included code change and regenerated the markdown pages for my project and visually compared them.

I also updated the just snapshot used for the markdown test.

Impacted documentation

Not applicable.

[colincasey]

@microsoft-github-policy-service agree