Run spell check over solution

OpenRA.Game/Exts.cs

@@ -107,7 +107,7 @@ namespace OpenRA
 			//  - the triangles ACD and BCD must have opposite sense (clockwise or anticlockwise)
 			//  - the triangles CAB and DAB must have opposite sense
 			// Segments intersect if the orientation (clockwise or anticlockwise) of the two points in each line segment are opposite with respect to the other
-			// Assumes that lines are not colinear
+			// Assumes that lines are not collinear
 			return WindingDirectionTest(c, d, a) != WindingDirectionTest(c, d, b) && WindingDirectionTest(a, b, c) != WindingDirectionTest(a, b, d);
 		}