Fix prop docs line breaks

[tigerros]

I'm sorry for creating a third PR for this, but I just noticed that there's one too many line breaks in the generated docs for props (see #1563 and #1565). I changed it to use the Rustdoc approach, which puts text separated by two lines into separate <p> elements. Previously, it just replaced \n with <br/>

Right now, this documentation:

/// Doc.
/// Next line.

Would generate:

Doc.
Next line.

But it's actually supposed to be:

Doc. Next line.

And when you used two new lines, the gap between them would be too big. Example image with the bug:

Fixed:

Regular Rustdoc:

[tigerros]

I'm confused why the checks are failing. cargo check --all --examples --tests compiles on my machine. I didn't change any versions either which seems to be the problem...

[ealmloff]

I'm confused why the checks are failing. cargo check --all --examples --tests compiles on my machine. I didn't change any versions either which seems to be the problem...

Some dependency of dioxus may have updated within the last hour since the previous CI run. CI will always use the latest version of dependancies like you always run cargo update before you build

[tigerros]

I ran cargo update and cargo check --all --examples --tests and still no error.

[jkelleyrtp]

Looks great - thanks @tigerros !