Update bme280test.ino

Degree C "°C" instead of "Asterisk".

Author: Marek N

examples/bme280test/bme280test.ino

@@ -71,7 +71,7 @@ void loop() {
 void printValues() {
     Serial.print("Temperature = ");
     Serial.print(bme.readTemperature());
-    Serial.println(" *C");
+    Serial.println(" °C");
 
     Serial.print("Pressure = ");
 
@@ -87,4 +87,4 @@ void printValues() {
     Serial.println(" %");
 
     Serial.println();
-}
+}