docs: fix grafana doc link
diff --git a/docs/UserManuals/DORA.md b/docs/UserManuals/DORA.md
index 9ea5943..75fe806 100644
--- a/docs/UserManuals/DORA.md
+++ b/docs/UserManuals/DORA.md
@@ -172,7 +172,7 @@
- [Median Time to Restore Service](https://devlake.apache.org/docs/Metrics/MTTR)
- [Change Failure Rate](https://devlake.apache.org/docs/Metrics/CFR)
-If you aren't familiar with Grafana, please refer to our [Grafana doc], or jump into Slack for help. (./Dashboards/GrafanaUserGuide.md)
+If you aren't familiar with Grafana, please refer to our [Grafana doc](./Dashboards/GrafanaUserGuide.md), or jump into Slack for help.
<br/>
