"~XXX~"are also parsed into erase lines

[M-1202]

Marked version:
"marked": “^15.0.7”
Describe the bug
"XXX"are also parsed into erase lines.This is bug.Because only "XXX" should be parsed into erase lines

To Reproduce
Steps to reproduce the behavior:

Expected behavior
A clear and concise description of what you expected to happen.

[UziTech]

If you look at your message both of them are parsed into erase lines on GitHub, so why do you think marked shouldn't parse one of them into erase lines?

[calculuschild]

According to the Spec:

https://github.github.com/gfm/#strikethrough-extension-

Strikethrough text is any text wrapped in a matching pair of one or two tildes (~).

This seems like the correct behavior.