special characters in fences

[alanmiller]

I'm trying to get the string:
https://api.abc.com/api/v1/test/<patharg>?<arg1>=<val1>&arg2=<val2>

to show as such in a code block but when I use fences (three-back ticks) or the four-spaces method
the ampersands get translated to "&" instead of a literal ampersand character.

If I load the same yaml in swagger-editor v2.9.6. it's display correctly.