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.
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