Fixed Label="false" bug.
doc: refine autodoc comments chapter
doc: switch comments chapter to use subsections
doc: add subsection labels to comments chapter
doc: more tweaks
doc: change AutoDoc() docu into a doc comment
Merge branch 'devel' of https://github.com/fingolfin/AutoDoc

* 'devel' of https://github.com/fingolfin/AutoDoc:
  doc: change AutoDoc() docu into a doc comment
  doc: more tweaks
  doc: add subsection labels to comments chapter
  doc: switch comments chapter to use subsections
  doc: refine autodoc comments chapter