- Convert the `importlib.metadata` subsection into a Tip.
 - Remove the 'Summary' subsection header.

Co-authored-by: Anderson Bravalheri <andersonbravalheri+github@gmail.com>

Have checked that the snippets continue to work with this space
included. The space improves readability, hence this is probably a good
addition.

Some extra indentation was causing the code block to be interpreted as a
code block within a blockquote.

A few lines have been added in each of the sections on Console Scripts,
GUI scripts and Entry Points for Plugins. A line has also been added at
the end of the Syntax section to further make things clear.

Matter is courtesy of @abravalheri.

Have removed the `.ini` syntax highlighting of the code blocks so that
the syntax does not appear specific to `setup.cfg` but more
general-purpose.

Have also moved this section down to the end of the document so that
users can refer to it after having a basic understanding of how each of
console scripts, GUI scripts, and entry points work.

Since it is deprecated and relevant details have already been covered in
a separate Dependencies Management page.

Explains why quoting around `timmins.display` is required. Might be
helpful for beginners.