Fix example formatting

Author: mathieucarbou

examples/arduino/PerfTests/PerfTests.ino

@@ -239,7 +239,9 @@ void loop() {
 
 #ifdef ESP32
   if (now - lastHeap >= 2000) {
-    Serial.printf("Uptime: %3lu s, requests: %3u, Free heap: %" PRIu32 ", Min free heap: %" PRIu32 "\n", millis() / 1000, requests, ESP.getFreeHeap(), ESP.getMinFreeHeap());
+    Serial.printf(
+      "Uptime: %3lu s, requests: %3u, Free heap: %" PRIu32 ", Min free heap: %" PRIu32 "\n", millis() / 1000, requests, ESP.getFreeHeap(), ESP.getMinFreeHeap()
+    );
     lastHeap = now;
   }
 #endif