Fix tutorial

Co-authored-by: Ian Chen <[email protected]>
Signed-off-by: Addisu Z. Taddese <[email protected]>

tutorials/install.md

@@ -71,7 +71,7 @@ necessary prerequisites followed by building from source.
     sudo sh -c 'echo "deb http://packages.osrfoundation.org/gazebo/ubuntu-stable `lsb_release -cs` main" > /etc/apt/sources.list.d/gazebo-stable.list'
     wget http://packages.osrfoundation.org/gazebo.key -O - | sudo apt-key add -
     sudo apt-get update
-    sudo apt-get -y install libgz-cmake4-dev libgz-sim2-dev
+    sudo apt-get -y install libgz-cmake4-dev libgz-sim9-dev
     ```
 
 ### Building from source