Respect markdown formatting

[zbarbuto]

Because the extension was pretty thrown together, it just hard-wraps everything to paragraphs.

What might be an improvement is to actually use markdown formatting rules (there are existing packages out there to do this) so that you can block format a large comment that also contains markdown and have it wrap as expected:

Currently:

/// This is my comment:
/// - Example info
/// - more info

// becomes

/// This is my comment : Example info - more
/// info

When really things like lists, block comments etc. should all start their own new block.