Update repositories.txt (#1770)

Mm1KEE · web-flow · commit 6bbd6c8162bf · 2022-08-29T16:03:58.000Z
diff --git a/repositories.txt b/repositories.txt
@@ -5149,3 +5149,4 @@ https://github.com/khoih-prog/ATtiny_TimerInterrupt
 https://github.com/berrak/LedTask
 https://github.com/asjdf/WebSerialLite
 https://github.com/khoih-prog/ATtiny_Slow_PWM
+https://github.com/Mm1KEE/SimpleFilter
