Update monitoring_ui.go

Fix metric format

Author: agvol

dnscrypt-proxy/monitoring_ui.go

@@ -485,7 +485,7 @@ func (mc *MetricsCollector) generatePrometheusMetrics() string {
 	// Write help and type information for each metric
 	result.WriteString("# HELP dnscrypt_proxy_build_info A metric with a constant '1' value labeled by version, goversion from which dnscrypt_proxy was built, and the goos and goarch for the build.\n")
 	result.WriteString("# TYPE dnscrypt_proxy_build_info gauge\n")
-	result.WriteString(fmt.Sprintf("dnscrypt_proxy_build_info{goarch=\"%s\" goos=\"%s\" goversion=\"%s\" version=\"%s\"} 1\n", runtime.GOARCH, runtime.GOOS, runtime.Version(), AppVersion))
+	result.WriteString(fmt.Sprintf("dnscrypt_proxy_build_info{goarch=\"%s\", goos=\"%s\", goversion=\"%s\", version=\"%s\"} 1\n", runtime.GOARCH, runtime.GOOS, runtime.Version(), AppVersion))
 
 	result.WriteString("# HELP dnscrypt_proxy_queries_total Total number of DNS queries processed\n")
 	result.WriteString("# TYPE dnscrypt_proxy_queries_total counter\n")