Fix package name

Author: 4c3y

.github/workflows/ubuntu20_04.yml

@@ -47,7 +47,7 @@ jobs:
         path: catkin_ws/src/mav_sensors
 
     - name: Build mav_sensors
-      run: source /opt/ros/${{ matrix.rosdistro }}/setup.bash && catkin build mav_sensors && source ${GITHUB_WORKSPACE}/catkin_ws/devel/setup.bash
+      run: source /opt/ros/${{ matrix.rosdistro }}/setup.bash && catkin build mav_sensors_demo && source ${GITHUB_WORKSPACE}/catkin_ws/devel/setup.bash
       shell: bash
       working-directory: catkin_ws