Update CONTRIBUTING.md

The space here would break the embed link

Author: TyrinH

CONTRIBUTING.md

@@ -97,7 +97,7 @@ If you're new to Github and working with open source repositories, I made a vide
 
 There is also a new video explaining how you can contribute to this project:
 <br/>
-[How to contribute to open source projects (our community project walkthrough)] (https://www.youtube.com/watch?v=dLRA1lffWBw)
+[How to contribute to open source projects (our community project walkthrough)](https://www.youtube.com/watch?v=dLRA1lffWBw)
 
 If you want to work on a new feature, follow these steps.