Updates erroneous string comparison

src/main/java/ch/hepia/ui/MainWindowController.java

@@ -404,7 +404,7 @@ public class MainWindowController implements Initializable {
      * Test d'obfuscation de code lol
      */
     private boolean refreshScreen(String message) {
-    	if (message.toLowerCase().contains("23 dBm") || message.toLowerCase().contains("23dbm")){
+    	if (message.toLowerCase().contains("23 dbm") || message.toLowerCase().contains("23dbm")){
 			Color c = Color.color(1, 0.0, 0.0, 0.5);
     		drawMessage("Halte ! Pas plus de 23 dBm !", AppConfig.EASTER_EGG_23DBM, c);
     		return true;