doc: Clean up spacing that caused <pre> or broken <ul>/<ol>

Whenever there is more than 2 spaces (except the extra space
on a continued line of an @ tag, or the extra space on a
continued line of a list item) it causes a <pre> context.

Removed both spurious spaces that caused a <pre> and ones that
didn't but looked like it could.

When making an ordered or unordered list, the first item needs
to be on a new line and in block context (e.g. an empty line
before it). Otherwise it is rendered inline as 1. Foo 2. Bar
(such as in #rebuildNodes where both the ordered and unordered
lists were broken).

Change-Id: Id0f154854afbdc8e5a8387da92e6b2cdf0875f69
Merge "doc: Clean up spacing that caused <pre> or broken <ul>/<ol>"