text rendering as emojis in strings generated docs

[wyardley]

Describe the Bug

Certain strings (e.g., .erlang::repo::apt::erlang_solutions) are rendered without being backtick escaped in certain places (headings, default values), and show up as emojis in rendered docs, as seen in
thttps://github.com/voxpupuli/puppet-erlang/blob/master/REFERENCE.md

Expected Behavior

The string is rendered without emojis

Steps to Reproduce

Steps to reproduce the behavior:

1. Create documentation with a parameter that will produce an emoji (see examples)
2. Use Puppet strings to generate docs
3. ???
4. Profit

Environment

• n/a

Additional Context

https://stackoverflow.com/questions/50657698/how-can-i-stop-github-from-rendering-emojis-in-markdown covers some of the possible workarounds. Wrapping in backticks should work.

[binford2k]

fixed in #243