katom types from ref/ in groups, @table :leading in lines of text and :rulesep, @code under txt, one table style attribute, literal-klammer options (from dev 2e453744f5e9)

kdesc --katoms is Klammertext rendered from ref/, the types in titled groups,
with --katoms full for the regex column.  @table :leading L is L lines of the
surrounding text in html as in pdf (default 1), and :rulesep spaces the
horizontal rules.  The html table has one style attribute, so :column_width
fractions take effect again.  @code and @source_listing render in plain
text; captions are numbered per kind there, and a table needs no blank line
around it.  @c takes :nd, and an option-shaped word before a bar inside
literal code is code.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

sks/section/section.k

@@ -2,8 +2,8 @@
 # the front and back matter of a book):
 
 @@section_args.o :id :n.int -1 :
-  Common arguments for section headings.  If *n* is not the default, it is used
-  as the section number.
+  Common arguments for section headings.  If *n* is not the default,
+  it is used as the section number.
 @@
 
 @@preface.k :id :name Preface : Preface text @@