Update formatting of step-41.

Update formatting of step-41.

Specifically:
* Use the same numbering scheme for enumerations as below. The style
  [(1)] likely originated from using an `\item[(1)]` in the original
  latex version of the introduction.
* Add a sentence after the bullet point list at the end of the introduction
  to help doxygen understand that it should not indent the following
  section heading (from the commented program) the same as the bullet
  point list.