Don’t parse literal content

[sooda]

Text inside an inline or block literal that looks like a substitution reference must still stay unmodified.

This currently fails because the substitution is processed for the inline literal:

Diff < left / right > :
<"<p>hello <code>foo.map(something differentworld + 42)</code></p>\n<pre>foo.map(|world| world + 42)\n</pre>"
>"<p>hello <code>foo.map(|world| world + 42)</code></p>\n<pre>foo.map(|world| world + 42)\n</pre>"