Update README.md

Closes #6

README.md

@@ -15,7 +15,7 @@ sudo apt-get install libqt5serialport5-dev
 ### Building
 ```sh
 cd catkin_ws
-git clone --recursive https://github.com/ElettraSciComp/witmotion_IMU_ros.git src/witmotion_ros
+git clone --recursive [https://github.com/ElettraSciComp/witmotion_IMU_ros.git](https://github.com/ElettraSciComp/witmotion_IMU_ros.git) src/witmotion_ros
 catkin_make
 ```
 If compilation fails, first check the directory `src/witmotion_ros/witmotion-uart-qt`. If it is empty, the recursive clone failed, and you should manually clone the underlying library from the repository https://github.com/ElettraSciComp/witmotion_IMU_QT into this directory. **IMPORTANT!** Please beware of the directory name, the `CMakeLists` file refers exactly to the name `witmotion-uart-qt` specified in the target import section.