parse failed for angle quotes if the end angle quote follows with a line feed or a carriage return
*Created by: huapeng01016*
using pegdown
```
static DataHolder OPTIONS = PegdownOptionsAdapter.flexmarkOptions(
Extensions.ALL
);
static Parser PARSER = Parser.builder(OPTIONS).build();
static HtmlRenderer RENDERER = HtmlRenderer.builder(OPTIONS).build();
```
The following code failed
```
System.out.println("here0");
Node document = PARSER.parse("<<test>>\n");
System.out.println("here1");
```
"\<\<test\>\>\r" failed as well.
Both "\<\<test\>\>\r\n" and "\<\<test\>\>\n\n" worked fine.
issue