Fix typo (#691) (#692)

(cherry picked from commit 4e91428)

Co-authored-by: Christoph Fröhlich <[email protected]>

example_11/ros2_control_demo_example_11.xml

@@ -3,7 +3,7 @@
          type="ros2_control_demo_example_11::CarlikeBotSystemHardware"
          base_class_type="hardware_interface::SystemInterface">
     <description>
-      The ros2_control CarlikeBot example using a system hardware interface-type. It uses velocity and position command and state interface for the drive motor and position command and state interface for the steering. The example is the starting point to implement a hardware interface for ackermann and bicycle drive robots.
+      The ros2_control CarlikeBot example using a system hardware interface-type. It uses velocity and position command and state interface for the drive motor and position command and state interface for the steering. The example is the starting point to implement a hardware interface for Ackermann and bicycle drive robots.
     </description>
   </class>
 </library>