Update repositories.txt

Author: MISTERNEGATIVE21

repositories.txt

@@ -8424,7 +8424,7 @@ https://github.com/stm32duino/IIS2DULPX
 https://github.com/stm32duino/ISM330IS
 https://github.com/stm32duino/ILPS22QS
 https://github.com/fulda1/SUSI2
-https://github.com/MISTERNEGATIVE21/QuectelEC200U_CN
+https://github.com/MISTERNEGATIVE21/QuectelEC200U
 https://github.com/WeSpeakEnglish/ANTIRTOS_MODERN
 https://github.com/hidori/MicroSerial
 https://github.com/7semi-solutions/7Semi-BNO055-Arduino-Library