Update _docs/tutorials/core/first_application_rtos/index.md

Co-authored-by: FranFin <58737168+FranFin@users.noreply.github.com>

Author: 2 people

_docs/tutorials/core/first_application_rtos/index.md

@@ -196,7 +196,7 @@ This will open the NuttX menu config, which allows you to modify the configurati
 - A list of the available applications will appear. You need to find: ``micro-ROS Ping-Pong`` and click ``y`` to add it.
 ![](imgs/nuttx_examples.png)
 
-- Now push three times the key ``ESC`` to close the menu. You will be asked if you want to save the save your new configuration, and you need to click ``Yes``.
+- Now push three times the key ``ESC`` to close the menu. You will be asked if you want to save your new configuration, and you need to click ``Yes``.
 
 
 To save your configuration execute the following commands: