fixup! [Wifi] added firmwareVersion method with preprocessor

Author: andreagilardoni

libraries/WiFi/src/WiFi.cpp

@@ -4,10 +4,10 @@ WiFiClass WiFi;
 
 String WiFiClass::firmwareVersion() { // TODO integrate fw version detection
 #if defined(ARDUINO_PORTENTA_C33)
-    return "v1.5.0"
-#if defined(ARDUINO_PORTENTA_H7) || defined(ARDUINO_OPTA) || defined(ARDUINO_GIGA) ||\
+    return "v1.5.0";
+#elif defined(ARDUINO_PORTENTA_H7) || defined(ARDUINO_OPTA) || defined(ARDUINO_GIGA) ||\
     defined(ARDUINO_NICLA_VISION) || defined(ARDUINO_NICLA_SENSE_ME)
-    return "v0.0.0"
+    return "v0.0.0";
 #else
     return "v0.0.0";
 #endif