Update repositories.txt (arduino#2859)

rui-huang-opt · web-flow · commit 9102a4016a02 · 2023-05-15T16:48:31.000Z
diff --git a/repositories.txt b/repositories.txt
@@ -5872,3 +5872,4 @@ https://github.com/Fbisinger/HeidelbergInterface
 https://github.com/GhassanYusuf/NewServo
 https://github.com/dojyorin/arduino_m0_tweak
 https://github.com/stm32duino/X-NUCLEO-NFC08A1
+https://github.com/rhrhhrhr/MPC_ruih
