Update how_to.md

Author: MichaelCurrin

docs/how_to.md

@@ -3,20 +3,29 @@
 Summary of topics in this section:
 
 
-## [Installation](installation.md)
+## Installation
+
+Go to [Installation](installation.md).
 
 How to install Tweepy.
 
-## [Authentication](auth.md)
+
+## Auth
+
+Go to [Authentication](auth.md).
 
 How to setup your credentials to connect to the Twitter API.
 
 
-## [Tweepy code samples](code_snippets.md)
+## Samples
+
+Go to [Tweepy code samples](code_snippets.md).
 
 Some Python code snippets are provided for some common use-cases, to avoid having to look at Tweepy docs or Twitter API docs directly. Links to the original docs are provided in some cases.
 
 
-## [Browser scraping](browser_scraping.md)
+## Scraping
+
+Go to [Browser scraping](browser_scraping.md).
 
-Extra section in case Twitter API does not meet your needs.
+An extra section, in case Twitter API does not meet your needs.