Fix built + typo

src/grafana/dashboards.go

 
 	if respBody.Status != "success" && isHttpUnknownError {
 		// Get the dashboard's slug for logging
-		slug, err := helpers.GetDashboardSlug(contentJSON)
+		var slug string
+		slug, err = helpers.GetDashboardSlug(contentJSON)
 		if err != nil {
 			return
 		}

src/pusher/webhook.go

 			logrus.WithFields(logrus.Fields{
 				"error":    err,
 				"filename": fileToPush,
-			}).Error("Failed push the file to Grafana")
+			}).Error("Failed to push the file to Grafana")
 
 			continue
 		}