Fix broken link in README

Author: seanchen1991

README.md

@@ -28,7 +28,7 @@ best for learning new languages.
 
 ## Resources
 
-* [Installing Python and pipenv](https://github.com/LambdaSchool/CS-Wiki/wiki/Installing-Python-3-and-pipenv)
+* [Installing Python 3](https://github.com/LambdaSchool/CS-Wiki/wiki/Installing-Python-3)
 * [JavaScript<->Python cheatsheet](https://github.com/LambdaSchool/CS-Wiki/wiki/Javascript-Python-cheatsheet)
 * [How to read Specs and Code](https://github.com/LambdaSchool/CS-Wiki/wiki/How-to-Read-Specifications-and-Code)
 * [Python 3 standard library](https://docs.python.org/3.6/library/)