Upgraded to 2.1.0 from 2.0.3 and see a test failure in dartdoc with text like `Sample class [String]\n<pre> A\n B\n</pre>` markdown removes the whitespace before `A` and `B`, using `HtmlRenderer().render`.
Upgraded to 2.1.0 from 2.0.3 and see a test failure in dartdoc with text like
Sample class [String]\n<pre> A\n B\n</pre>markdown removes the whitespace before
AandB, usingHtmlRenderer().render.