Launch-In-SITL.md

@@ -51,7 +51,7 @@ Both “–out” refer to UDP connexion create by MAVProxy. We will use UDP acc
 Edit the launch file with correct **fcu_url**
 ```shell
 cd <droneoa_ros>/launch
-nano apm.launch
+nano apmSITL.launch
 <arg name="fcu_url" default="udp://127.0.0.1:14551@14555" />
 ```
 
@@ -64,7 +64,7 @@ source <WORKSPACE_PATH>/devel/setup.bash
 ## Launch Supporting ROS Nodes
 ```shell
 cd <droneoa_ros>/launch
-roslaunch step1.launch
+roslaunch step1SITL.launch
 ```
 **Note:** For first time launch, run the following script to create a device name for ydlidar.
 ```shell