[gtk-doc] mkhtml2: update TODOs

[Stefan Sauer <stefkost src gnome org>]

commit 975fec43355af9c85f8b9ae8a7e1cbdbc61f79e3
Author: Stefan Sauer <ensonic users sf net>
Date:   Sun Apr 1 12:15:43 2018 +0200

    mkhtml2: update TODOs

 gtkdoc/mkhtml2.py |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gtkdoc/mkhtml2.py b/gtkdoc/mkhtml2.py
index aa12d70..ead4c23 100644
--- a/gtkdoc/mkhtml2.py
+++ b/gtkdoc/mkhtml2.py
@@ -35,11 +35,12 @@ xml can be easilly supported, but for some combinations of tags we prefer
 simplicity.
 
 TODO:
-- more chunk converters
-- more tag converters:
+- tag converters:
   - inside 'footnote' one can have many tags, we only handle 'para'/'simpara'
   - inside 'inlinemediaobject'/'mediaobject' a 'textobject' becomes the 'alt'
     attr on the <img> tag of the 'imageobject'
+  - glossary/index: depending on the parents, the headings as h1/h2
+  - the part titles have a generated prefix, such as 'Part I:'
 - check each docbook tag if it can contain #PCDATA, if not don't check for
   xml.text
 - consider some perf-warnings flag