fix python titles

Author: tuvtran

README.md

@@ -44,20 +44,20 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
     * [Part 3](https://scotch.io/tutorials/build-a-music-player-with-react-electron-iii-bringing-it-all-together)
 
 ## Python:
-### Scraping
+### Web Scraping:
 * [Mining Twitter Data with Python](https://marcobonzanini.com/2015/03/02/mining-twitter-data-with-python-part-1/)
 * [Scrape a Website with Scrapy and MongoDB](https://realpython.com/blog/python/web-scraping-with-scrapy-and-mongodb/)
-### Webapps
+### Web Applications:
 * [Build a Microblog with Flask](https://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-i-hello-world)
 * [Create a blog webapp in Django](https://tutorial.djangogirls.org/en/)
 * [Choose Your Own Adventure Presentations](https://www.twilio.com/blog/2015/03/choose-your-own-adventures-presentations-wizard-mode-part-1-of-3.html)
 * [Build a Todo List with Flask and RethinkDB](https://realpython.com/blog/python/rethink-flask-a-simple-todo-list-powered-by-flask-and-rethinkdb/)
-### Bots
+### Bots:
 * [Build a Reddit Bot](http://pythonforengineers.com/build-a-reddit-bot-part-1/)
 * [How to Make a Reddit Bot - YouTube](https://www.youtube.com/watch?v=krTUf7BpTc0)
 * [Build a Facebook Messenger Bot](https://blog.hartleybrody.com/fb-messenger-bot/)
 * [Making a Reddit + Facebook Messenger Bot](https://pythontips.com/2017/04/13/making-a-reddit-facebook-messenger-bot/)
-### Misc
+### Miscellaneous:
 * [Build a Simple Interpreter](https://ruslanspivak.com/lsbasi-part1/)
 * [Write a NoSQL Database in Python](https://jeffknupp.com/blog/2014/09/01/what-is-a-nosql-database-learn-by-writing-one-in-python/)
 * [Building a Gas Pump Scanner with OpenCV/Python/iOS](https://hackernoon.com/building-a-gas-pump-scanner-with-opencv-python-ios-116fe6c9ae8b)