Fix golangci lint.

cmd/poseidon/main.go

@@ -38,11 +38,11 @@ func shutdownSentry() {
 }
 
 func initInfluxDB(db *config.InfluxDB) (writeAPI influxdb2API.WriteAPI, cancel func()) {
-	if db.Url == "" {
+	if db.URL == "" {
 		return nil, func() {}
 	}
 
-	client := influxdb2.NewClient(db.Url, db.Token)
+	client := influxdb2.NewClient(db.URL, db.Token)
 	writeAPI = client.WriteAPI(db.Organization, db.Bucket)
 	cancel = func() {
 		writeAPI.Flush()

internal/config/config.go

@@ -54,7 +54,7 @@ var (
 		},
 		Sentry: sentry.ClientOptions{},
 		InfluxDB: InfluxDB{
-			Url:          "",
+			URL:          "",
 			Token:        "",
 			Organization: "",
 			Bucket:       "",
@@ -123,7 +123,7 @@ type logger struct {
 
 // InfluxDB configures the usage of an Influx db monitoring.
 type InfluxDB struct {
-	Url          string
+	URL          string
 	Token        string
 	Organization string
 	Bucket       string