fixed spelling

sorry Roel!

README.md

@@ -83,7 +83,7 @@ Many thanks to the great work by:
 
  - OpenDroneID: https://github.com/opendroneid/
  - Steve Jack: https://github.com/sxjack/uav_electronic_ids
- - Roel Schematics: https://bluemark.io/
+ - Roel Schiphorst: https://bluemark.io/
  - David Buzz: ESP32 CAN and bluetooth drivers
 
 This firmware builds on their work.