watchdog-go: 正規表現を修正

watchdog-go/config.ini

@@ -1,2 +1,2 @@
 [Parent]
-url = localhost:8080
+url = localhost:50051

watchdog-go/main.go

@@ -21,7 +21,7 @@ type Config struct {
 	ClientDomain string
 }
 
-var regex = regexp.MustCompile(`^[a-zA-Z0-9-_]`)
+var regex = regexp.MustCompile(`[^a-zA-Z0-9-_]`)
 
 func main() {
 	fmt.Println("start gRPC Client.")