small typo fix (#682)

Signed-off-by: Achille Verheye <achille.verheye@gmail.com>

Author: Achllle

setup_guides/odom/setup_robot_localization.rst

@@ -90,7 +90,7 @@ To add a sensor input to the ``ekf_filter_node``, add the next number in the seq
 To understand how ``robot_localization`` is configured and understand the reasoning behind the config have a look at `Configuring robot_localization <http://docs.ros.org/en/melodic/api/robot_localization/html/configuring_robot_localization.html>`_.
 
 .. seealso::
-  For more advise on configuration of input data to ``robot_localization``, see `Preparing Your Data for Use with robot_localization <http://docs.ros.org/en/melodic/api/robot_localization/html/preparing_sensor_data.html#odometry>`_, and `Configuring robot_localization <http://docs.ros.org/en/melodic/api/robot_localization/html/configuring_robot_localization.html>`_.
+  For more advice on configuration of input data to ``robot_localization``, see `Preparing Your Data for Use with robot_localization <http://docs.ros.org/en/melodic/api/robot_localization/html/preparing_sensor_data.html#odometry>`_, and `Configuring robot_localization <http://docs.ros.org/en/melodic/api/robot_localization/html/configuring_robot_localization.html>`_.
 
 
 Launch and Build Files