Updated Collision detection (markdown)

Collision-detection.md

@@ -45,7 +45,7 @@ ContainmentType Contains(FXMVECTOR V0, FXMVECTOR V1, FXMVECTOR V2) const;
 ContainmentType Contains(const BoundingSphere& sh) const;
 ContainmentType Contains(const BoundingBox& box) const;
 ContainmentType Contains(const BoundingOrientedBox& box) const;
-ContainmentType Contains( _In_ const BoundingFrustum& fr ) const;
+ContainmentType Contains(const BoundingFrustum& fr) const;
 ```
 
 The **ContainedBy** method provides *sphere contained by frustum* test.