Update cli.rst

Broken deep link ⇒ making it a more robust root one

#1021 Moved VS Code to Text Editor

Fix link to Repository Structure and Python

Update the link to Python Koans

Fixed Pro Python link from unused domain to seller

from unused domain to where it is sold

mu editor

It has a working Python 3 version with fixed and updated tests.

Fix broken Sphinx Links

Update diveinto link

The diveinto.org link is broken when I try it.  I found that https://diveinto.org/python3/table-of-contents.html works but the https://diveintopython3.net/ is shorter and appears less broken to someone reading the url for the first time.  The table of content at this updated address looks the same as what I found on the web.archive.org for the diveinto.org link.

Correcting pyenv url

Fixed link to non-existing pep20_by_example.pdf

Fixed broken link to Pipenv documentation

Changed `https://docs.pipenv.org/` -> `https://pipenv.kennethreitz.org/`

entry Latest release date added to comparison of features table

Fix broken link to Kenneth Reitz homepage

Use PY3 http.server instead of SimpleHTTPServer

Trivial fix