Small patch for "Understanding ROS 2 Services" (ros2#680)

* Small patch for "Understanding ROS 2 Services" Signed-off-by: maryaB-osr <[email protected]> * linter Signed-off-by: maryaB-osr <[email protected]>
L-op · May 12, 2020 · d3c4cbc · d3c4cbc
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diff --git a/source/Tutorials/Services/Understanding-ROS2-Services.rst b/source/Tutorials/Services/Understanding-ROS2-Services.rst
@@ -23,7 +23,7 @@ While topics allow nodes to subscribe to data streams and get continual updates,
 Prerequisites
 -------------
 
-Some concepts mentioned in this tutorial, like nodes and :ref:`topics <ROS2Topics>`, were covered in previous tutorials in the series.
+Some concepts mentioned in this tutorial, like :ref:`nodes <ROS2Nodes>` and :ref:`topics <ROS2Topics>`, were covered in previous tutorials in the series.
 
 You will need the :ref:`turtlesim package <Turtlesim>`
 
@@ -262,3 +262,8 @@ Next steps
 ----------
 
 In the next tutorial, :ref:`ROS2Params`, you will learn about configuring node settings.
+
+Related content
+---------------
+
+Check out `this tutorial <https://discourse.ubuntu.com/t/call-services-in-ros-2/15261>`_; it's an excellent realistic application of "Understanding ROS 2 services" using a Robotis robot arm.
diff --git a/source/Tutorials/Turtlesim/Introducing-Turtlesim.rst b/source/Tutorials/Turtlesim/Introducing-Turtlesim.rst
@@ -262,3 +262,9 @@ Next steps
 ----------
 
 Now that you have turtlesim and rqt up and running, and an idea of how they work, let's dive in to the first core ROS 2 concept with the next tutorial, :ref:`ROS2Nodes`.
+
+Related content
+---------------
+
+The turtlesim package can be found in the `ros_tutorials repo <https://github.com/ros/ros_tutorials/tree/foxy-devel/turtlesim>`_.
+Make sure to adjust the branch to view the version of turtlesim corresponding to your installed ROS 2 distro.