Update Example3_StatusAndRate.ino

Fix for issue #30. See table 4 in [datasheet](https://cdn.sparkfun.com/assets/e/1/8/4/e/VL53L1X_API.pdf#%5B%7B%22num%22%3A48%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22XYZ%22%7D%2C67%2C625%2Cnull%5D).

Author: santaimpersonator

examples/Example3_StatusAndRate/Example3_StatusAndRate.ino

@@ -85,10 +85,10 @@ void loop(void)
       Serial.print("Good");
       break;
     case 1:
-      Serial.print("Signal fail");
+      Serial.print("Sigma fail");
       break;
     case 2:
-      Serial.print("Sigma fail");
+      Serial.print("Signal fail");
       break;
     case 7:
       Serial.print("Wrapped target fail");