Update _docs/concepts/client_library/real-time_executor/index.md

JanStaschulat · ralph-lange · web-flow · commit 60f3b7ade6c5 · 2020-12-22T14:37:47.000+01:00
Co-authored-by: Ralph Lange &lt;ralph-lange@users.noreply.github.com&gt;
diff --git a/_docs/concepts/client_library/real-time_executor/index.md b/_docs/concepts/client_library/real-time_executor/index.md
@@ -507,7 +507,7 @@ In this section, we describe the necessary changes to the Executor API:
     * Extended arguments of create\_callback\_group function for the real-time class.
     * Removed the get\_associated\_with\_executor\_atomic function.
 
-The callback-grouplevel executor has been merged into ROS 2 rclcpp in [pull request 1218](https://github.com/ros2/rclcpp/pull/1218/commits).
+The callback-group-level executor has been merged into ROS 2 rclcpp in [pull request 1218](https://github.com/ros2/rclcpp/pull/1218/commits).
 
 ### Test Bench
 
