Fix uncrustify

Signed-off-by: Brice <brice.renaudeau@gmail.com>

nav2_collision_monitor/src/polygon.cpp

@@ -245,7 +245,7 @@ double Polygon::getCollisionTime(
     // Transform collision_points to the frame concerned with current robot pose
     points_transformed = collision_points;
     transformPoints(pose, points_transformed);
-    // If the collision occurred on this stage, return the actual collision time 
+    // If the collision occurred on this stage, return the actual collision time
     // as if robot was moved with given velocity
     if (getPointsInside(points_transformed) >= min_points_) {
       return time;