went through the folders AI, algorithms, and the other half of collision detection

Author: Doublestuf

Diff for: CONTRIBUTORS.md

@@ -15,4 +15,4 @@ Special Thanks to the following people who helped making this work even better:
 - **Nikita Ivanchenko (Nivanchenko)** - For fixing some mistakes
 - **abreathingcorpse** - Proofreading and fixing some math mistakes
 - **LuosRestil** - For fixing some mistakes
-- **Doublestuf** - Improving Python listings
+- **Doublestuf** - For improving code listings

Diff for: dynamic_listings/C++/default/collisiondetection/point_circle_lazy.cpp

@@ -2,7 +2,7 @@
 
 struct Circle{
     Point center;
-    int radius;
+    float radius;
 };
 
 float distance(Point A, Point B){