Fixed typos.

example_2.md

@@ -60,7 +60,7 @@ python3 scan_filter.py
 
 Then run the following command to bring up a simple RViz configuration of the Stretch robot.
 ```bash
-# Terminal 5
+# Terminal 4
 rosrun rviz rviz -d `rospack find stretch_core`/rviz/stretch_simple_test.rviz
 ```
 Change the topic name from the LaserScan display from */scan* to */filter_scan*.

example_3.md

@@ -2,21 +2,21 @@
 
 The aim of example 3 is to combine the two previous examples and have Stretch utilize its laser scan data to avoid collision with objects as it drives forward.
 
-Begin by running `roscore` in a terminal. Then set the ros parameter to *manipulation* mode  by running the following commands in a new terminal.
+Begin by running `roscore` in a terminal. Then set the ros parameter to *navigation* mode  by running the following commands in a new terminal.
 
 ```bash
-# Terminal 1
-rosparam set /stretch_driver/mode "manipulation"
+# Terminal 2
+rosparam set /stretch_driver/mode "navigation"
 roslaunch stretch_core stretch_driver.launch
 ```
 Then in a new terminal type the following to activate the LiDAR sensor.
 ```bash
-# Terminal 2
+# Terminal 3
 roslaunch stretch_core rplidar.launch
 ```
 To activate the avoider node, type the following in a new terminal.
 ```bash
-# Terminal 3
+# Terminal 4
 cd catkin_ws/src/stretch_ros_tutorials/src/
 python3 avoider.py
 ```

src/multipoint_command.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 
 # Every python controller needs these lines
 import rospy

src/stow_command.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 
 # Every python controller needs these lines
 import rospy