example: fix OptoRelay example

Author: facchinm

examples/Modulino_Relay/Basic/Basic.ino renamed to examples/Modulino_OptoRelay/Basic/Basic.ino

@@ -1,6 +1,6 @@
 #include <Modulino.h>
 
-ModulinoRelay relay;
+ModulinoOptoRelay relay;
 
 void setup() {
   Serial.begin(115200);