fix linter error

Signed-off-by: KentHsu <[email protected]>

Author: KentHsu

cmd/dashboard.go

@@ -181,7 +181,7 @@ dapr dashboard -k -p 0
 			}()
 
 			// url for dashboard after port forwarding.
-			webURL := fmt.Sprintf("http://%s", net.JoinHostPort(dashboardHost, strconv.Itoa(portForward.LocalPort)))
+			webURL := "http://" + net.JoinHostPort(dashboardHost, strconv.Itoa(portForward.LocalPort))
 
 			print.InfoStatusEvent(os.Stdout, "Dapr dashboard found in namespace:\t"+foundNamespace)
 			print.InfoStatusEvent(os.Stdout, fmt.Sprintf("Dapr dashboard available at:\t%s\n", webURL))