amend the use example
diff --git a/rocketmq_exporter_use_example.md b/rocketmq_exporter_use_example.md
index 2bebafe..5de9e79 100644
--- a/rocketmq_exporter_use_example.md
+++ b/rocketmq_exporter_use_example.md
@@ -80,7 +80,7 @@
./bin/grafana-server web
```
-Then, by accessing http://<server IP address>:55555 through the browser, users can verify whether the Grafana has been successfully installed. The system default username and password are admin/admin. The first time users log in to the system, users will be asked to change the password. In addition, users need to set Grafana's data source to Prometheus. If user have start up Prometheus like above, now the data source address will be http://<server IP address>:5555. For the convenience of users, RocketMQ's dashboard configuration file has been uploaded to Grafana's official website https://grafana.com/dashboards/10477/revisions. Users only need to download the configuration file and creating the RocketMQ dashboard by importing the configuration file into the Grafana.
+Then, by accessing http://<server IP address>:55555 through the browser, users can verify whether the Grafana has been successfully installed. The system default username and password are admin/admin. The first time users log in to the system, users will be asked to change the password. In addition, users need to set Grafana's data source to Prometheus. If user have started up Prometheus like above, now the data source address will be http://<server IP address>:5555. For the convenience of users, RocketMQ's dashboard configuration file has been uploaded to Grafana's official website https://grafana.com/dashboards/10477/revisions. Users only need to download the configuration file and creating the RocketMQ dashboard by importing the configuration file into the Grafana.
## 6 Configure alarms in Prometheus
