Merge pull request realpython#418 from kuyan/heroku

Scenarios - Web - Heroku: link rot

Author: sigmavirus24

docs/scenarios/web.rst

@@ -160,14 +160,14 @@ uWSGI
 -----
 
 `uWSGI <https://uwsgi-docs.readthedocs.org>`_ is a full stack for building
-hosting services.  In addition to process management, process monitoring, 
-and other functionality, uWSGI acts as an application server for various 
+hosting services.  In addition to process management, process monitoring,
+and other functionality, uWSGI acts as an application server for various
 programming languages and protocols - including Python and WSGI. uWSGI can
-either be run as a stand-alone web router, or be run behind a full web 
+either be run as a stand-alone web router, or be run behind a full web
 server (such as Nginx or Apache).  In the latter case, a web server can
 configure uWSGI and an application's operation over the
 `uwsgi <https://uwsgi-docs.readthedocs.org/en/latest/Protocol.html>`_
-protocol.  uWSGI's web server support allows for dynamically configuring 
+protocol.  uWSGI's web server support allows for dynamically configuring
 Python, passing environment variables and further tuning.  For full details,
 see `uWSGI magic
 variables <https://uwsgi-docs.readthedocs.org/en/latest/Vars.html>`_.
@@ -220,10 +220,10 @@ free of charge. Heroku is best described as a horizontal scaling platform. They
 start to charge you once you "scale" your application to run on more than one
 Dyno (abstracted servers) at a time.
 
-Heroku publishes `step-by-step instructions
-<http://devcenter.heroku.com/articles/python>`_ on how to set up your first
-application for use in Heroku, and maintains a list of `example applications
-<http://python.herokuapp.com/>`_.
+Heroku maintains `articles <https://devcenter.heroku.com/categories/python>`_
+on using Python with Heroku as well as `step-by-step instructions
+<https://devcenter.heroku.com/articles/getting-started-with-python>`_ on
+how to set up your first application.
 
 
 DotCloud