Respect newlines

[Andre-LA]

Currently tealdoc merges the text on the same lines

example:

--- Creates the DOCTYPE element
---
--- This is a second line!
--- @param doctype the doctype value, it's "html" by default
--- @return The DOCTYPE element
function Page.doctype(doctype?: string): Element
	return Element.new('!DOCTYPE', {doctype or 'html'})
end

output (``` modified to `):

## tlpages.page.doctype

`
function tlpages.page.doctype(doctype: string): Element
`

Creates the DOCTYPE element  This is a second line!
#### Parameters

- **`doctype`** (`string`) — the doctype value, it's "html" by default

#### Returns

1. (`Element`) — The DOCTYPE element

The same thing happens on html page.