Fixed issue due to gazebo_ros2_control PR #277

As described in ros-controls/gazebo_ros2_control#295

jackal_description/urdf/accessories.urdf.xacro

@@ -3,7 +3,7 @@
   <!--
     As you add to this URDF, please be aware that both the robot and
     simulation include it. You must retain compatibility with all of
-    the following launch files:
+    the following launch files
 
     jackal_viz/launch/view_model.launch
     jackal_gazebo/launch/jackal_world.launch
@@ -111,7 +111,7 @@
 
   <!--
     Add a 3D lidar sensor.  By default this is a Velodyne VLP16 but can be changed with the
-    JACKAL_LASER_3D_MODEL environment variable. Valid model designations are:
+    JACKAL_LASER_3D_MODEL environment variable. Valid model designations are
     - vlp16 (default)  :: Velodyne VLP16
     - vlp32e           :: Velodyne HDL-32E
   -->

jackal_description/urdf/jackal.urdf.xacro

@@ -123,7 +123,7 @@
       <!-- Center of mass -->
       <origin xyz="0.012  0.002 0.067" rpy="0 0 0"/>
       <mass value="16.523"/>
-      <!-- Moments of inertia: ( chassis without wheels ) -->
+      <!-- Moments of inertia ( chassis without wheels ) -->
       <inertia
         ixx="0.3136" ixy="-0.0008" ixz="0.0164"
         iyy="0.3922" iyz="-0.0009"
@@ -201,7 +201,7 @@
     <child link="rear_fender_link" />
   </joint>
 
-  <!-- TODO: Make this internal_imu_link or something, and use a mixed-in xacro
+  <!-- TODO Make this internal_imu_link or something, and use a mixed-in xacro
        to supply the joint between it and imu_link. This is important so that imu_link
        always points to the "active" IMU. When an upgrade IMU is connected, the
        internal_imu_link should remain, but imu_link should point to the upgrade one. -->
@@ -217,7 +217,7 @@
     <child link="imu_link" />
   </joint>
 
-  <!-- TODO: Same note as applies to imu_link -->
+  <!-- TODO Same note as applies to imu_link -->
   <link name="navsat_link">
     <visual>
       <geometry>