Warning on Elixir 1.16

[thbar]

Found while upgrading our app:

==> earmark
Compiling 3 files (.erl)
Compiling 61 files (.ex)
warning: ~R/.../ is deprecated, use ~r/.../ instead
  lib/earmark_parser/line_scanner.ex:87: Earmark.Parser.LineScanner._type_of/3

[amit-chaudhari1]

#476 (comment)
so the fix has been merged. But we have not created a release yet
I'm solving #487 and will create a release after I patch it.

[amit-chaudhari1]

More specifically, https://github.com/pragdave/earmark/pull/476/files#diff-23f3a51773d305574af3c9b1c8f571a95f6c533e1502145ea086c1da8d2d7f43R88

I'll close this issue after we create a release, please leave this open for now