i.e., `$ bundle exec liquidoc -d _data/data-sample.yml -t _templates/liquid/tpl-sample.asciidoc -o sample.adoc` works, but `$ bundle exec liquidoc -d _data/data-sample.yaml -t _templates/liquid/tpl-sample.asciidoc -o sample.adoc` doesn't
i.e.,
$ bundle exec liquidoc -d _data/data-sample.yml -t _templates/liquid/tpl-sample.asciidoc -o sample.adocworks, but$ bundle exec liquidoc -d _data/data-sample.yaml -t _templates/liquid/tpl-sample.asciidoc -o sample.adocdoesn't