Fix broken link to wiki

Author: redblobgames

README.md

@@ -2,7 +2,7 @@
 Visualization of concepts from Russell And Norvig's "Artificial Intelligence — A Modern Approach", and Javascript code for algorithms. Unlike aima-python, aima-java, and other sibling projects, this project is primarily about the visualizations and secondarily about the code.
 
 - [View the visualizations](http://aimacode.github.io/aima-javascript/)
-- [How to contribute](https://github.com/aimacode/aima-javascript/wiki/Contribution)
+- [How to contribute](https://github.com/aimacode/aima-javascript/wiki/How-to-Contribute)
 - [Chat on Gitter](https://gitter.im/aimacode/Lobby)
 
 Some Javascript visualizations that I admire, and would like to see similar kinds of things here: