README fix LICENSE link

README.md

@@ -8,7 +8,7 @@
 
 This repository holds the [PX4 Pro](http://px4.io) flight control solution for drones, with the main applications located in the [src/modules](https://github.com/PX4/Firmware/tree/master/src/modules) directory. It also contains the PX4 Drone Middleware Platform, which provides drivers and middleware to run drones.
 
-  * Official Website: http://px4.io (License: BSD 3-clause, [LICENSE.md](https://github.com/PX4/Firmware/blob/master/LICENSE.md))
+  * Official Website: http://px4.io (License: BSD 3-clause, [LICENSE](https://github.com/PX4/Firmware/blob/master/LICENSE))
   * Supported airframes:
     * [Multicopters](http://px4.io/portfolio_category/multicopter/)
     * [Fixed wing](http://px4.io/portfolio_category/plane/)