updated docs

docs/detectnet-camera-2.md

@@ -23,6 +23,7 @@ $ ./detectnet-camera # by default, program will run using multipe
 
 > **note**: by default, the Jetson's onboard CSI camera will be used as the video source. If you wish to use a USB webcam instead, change the `DEFAULT_CAMERA` define at the top of [`detectnet-camera.cpp`](../detectnet-camera/detectnet-camera.cpp) to reflect the /dev/video V4L2 device of your USB camera and recompile. The webcam model it's tested with is Logitech C920. 
 
+<br/>
 ## What's Next
 
 This is the last step of the *Hello AI World* tutorial, which covers inferencing on Jetson with TensorRT.