Ruby

[ruby/rdoc] Use distinct styles for note lists and label lists
(https://github.com/ruby/rdoc/pull/1209)

• Use the original label description list style

As a default for all description lists, the original "label" style is
more readable.

This is slightly different from the original label dl though:

• slightly increased left margin for dd (to 1em)

• removed right margin on dd

• removed dt bottom margin and dd top margin, to reduce the gap
  between the term and its description (to only the standard line-height
  gap).

• Add closing tags for description list terms

Without the closing tags, the dt elements contain whitespace after the
text. This normally isn't a big deal, but does mess some things up,
e.g: using ::after with content: ", " in stylesheets.

• Restore float:left style for note lists

Unlike the original note list styles, this version sets the line-height
for all dt elements to be the same as the p elements contained
inside the dd, so that the second line has the same indentation as all
subsequent lines.

• Add commas between note list terms

https://github.com/ruby/rdoc/commit/9e69ea6d75