
Render a topic's heading identifier (the part before " - Title")
Source:R/render_md.R
dot-render_topic_heading.RdRenders callable names as `name()` (joined with a middle dot when a
topic documents more than one, e.g. lead() / lag()), or the bare
topic name with no parentheses for non-callable topics (datasets,
concept/package-overview pages) - see .callable_names().