fix level prefix

Author: frostbyte73

logger/medialogutils/cmd.go

@@ -54,7 +54,7 @@ func (l *HandlerLogger) Write(p []byte) (n int, err error) {
 	s := strings.Split(strings.TrimSuffix(string(p), "\n"), "\n")
 	for _, line := range s {
 		switch {
-		case (l.json && strings.HasPrefix(line, "{level:")) ||
+		case (l.json && strings.HasPrefix(line, `{"level":"`)) ||
 			(!l.json && len(line) > 24 && line[24] == '\t'):
 			// normal log
 			fmt.Println(s)