Shorten delay after sending command

src/main.cpp

@@ -146,7 +146,7 @@ void sendCommand(uint8_t *buffer) //transmit a command
     for (int i = 1; i < 200; i++) {
       radio.writeFast(buffer, bytecount);
     }
-    delay(500);
+    delay(100);
     radio.flush_tx();
     radio.txStandBy();
   }