For those few of you who write your docstrings in plaintext and not markdown, https://github.com/cljdoc/cljdoc/issues/779.
https://github.com/cljdoc/cljdoc/blob/master/doc/userguide/for-library-authors.adoc#cljdoc-config; specify :cljdoc/docstring-format :plaintext in your doc/cljdoc.edn.