README add FMUv5 pixhawk 4 and pixhawk 4 mini

README.md

@@ -94,7 +94,9 @@ This repository contains code supporting these boards:
   * FMUv4.x
     * [Pixracer](https://docs.px4.io/en/flight_controller/pixracer.html)
     * [Pixhawk 3 Pro](https://docs.px4.io/en/flight_controller/pixhawk3_pro.html)
-  * FMUv5.x (ARM Cortex M7, future Pixhawk)
+  * FMUv5.x (ARM Cortex M7)
+    * [Pixhawk 4](https://docs.px4.io/en/flight_controller/pixhawk4.html)
+    * [Pixhawk 4 mini](https://docs.px4.io/en/flight_controller/pixhawk4_mini.html)  
   * [Gumstix AeroCore](https://www.gumstix.com/aerocore-2/) (only v2)
   * [Airmind MindPX V2.8](http://www.mindpx.net/assets/accessories/UserGuide_MindPX.pdf)
   * [Airmind MindRacer V1.2](http://mindpx.net/assets/accessories/mindracer_user_guide_v1.2.pdf)