Update README.md

Author: gardeg

README.md

@@ -7,9 +7,10 @@ Repository to move image to gstreamer
 # Setup
 
 ```
+## launch variables
 ros2 launch image_to_gstreamer image_to_gstreamer.launch.py host:=127.0.0.1 port:=5001
 
-terminal launch for gstreamer
+## terminal launch for gstreamer
 gst-launch-1.0 udpsrc port=5001   caps="application/x-rtp,media=video,encoding-name=H265,payload=96"
 ! rtph265depay   ! avdec_h265   ! videoconvert ! fpsdisplaysink
 ```
@@ -48,3 +49,4 @@ pre-commit autoupdate
 
 
 
+