Headings created with =Heading= wiki-style markup should not have a spurious left indent

[scabug]

<h3>-level headings (i.e. those created by =Heading= wiki-style markup) in the body of Scaladoc-generated HTML have a spurious indent from the left. This does not appear to serve any purpose, and is perhaps the reason why the library API Scaladoc uses <h4>-level headings (==Heading== in wiki-style markup) for its primary headings. (An example of the latter may be found at: [http://www.scala-lang.org/api/2.12.1/].)

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-10236?orig=1 Reporter: Daniel Neades (dneades) Affected Versions: 2.12.1

[SethTisue]

this may have been fixed in a subsequent Scaladoc overhaul, perhaps someone would like to check, and/or check Scala 3?