Incorrect footnote link
*Created by: zhenyuluo*
Hi,
I found that when line separator is ```\r\n```, the footnote link can't be rendered correctly.
Below is my test:
```java
public static String toHtml(String raw) {
MutableDataHolder options = new MutableDataSet();
List<Extension> extensions = Lists.newArrayList();
options.set(Parser.EXTENSIONS, extensions);
// change soft break to hard break
options.set(HtmlRenderer.SOFT_BREAK, "<br/>");
Parser parser = Parser.builder(options).build();
Node document = parser.parse(raw);
HtmlRenderer renderer = HtmlRenderer.builder(options).build();
return renderer.render(document);
}
public static void main(String[] args) {
String str = "Incorrect: [amazon][2]\r\n" +
"\r\n" +
"[1]: http://www.google.com/\r\n" +
"[2]: http://www.amazon.com/";
System.out.println(toHtml(str));
}
```
the output is:
```
<p>Incorrect: [amazon][2]</p>
<p>[1]: http://www.google.com/<br/>[2]: http://www.amazon.com/</p>
```
If the line separator is ```\n```, then everything is fine.
issue