Fix expected parameters count in error message

server/src/main/java/com/genymobile/scrcpy/Server.java

@@ -68,7 +68,7 @@ public final class Server {
     @SuppressWarnings("checkstyle:MagicNumber")
     private static Options createOptions(String... args) {
         if (args.length != 6) {
-            throw new IllegalArgumentException("Expecting 5 parameters");
+            throw new IllegalArgumentException("Expecting 6 parameters");
         }
 
         Options options = new Options();