Add map_yaml param to autodock tutorial

ros1/autodocking_nav_stack.md

@@ -41,7 +41,7 @@ stretch_robot_stow.py
 
 To launch the demo, execute the following command:
 ```{.bash .shell-prompt}
-roslaunch stretch_demos autodocking.launch
+roslaunch stretch_demos autodocking.launch map_yaml:=${HELLO_FLEET_PATH}/maps/<map_name>.yaml
 ```
 
 <p align="center">
@@ -206,4 +206,4 @@ This demo serves as an experimental setup to explore self-charging with Stretch.
 - The controller implementation is not robust to erroneous predock pose supplied by the camera and friction introduced by floor surfaces like carpet
 - The current design of the docking station is minimal and it is recommended that users find ways to stick the station to the floor to prevent it from moving while docking
 
-Users are encouraged to try this demo and submit improvements.
+Users are encouraged to try this demo and submit improvements.