docs: fix typo in the Grafana dashboard block in SPO guide

Author: jpraynaud

docs/website/root/manual/getting-started/run-signer-node.md

@@ -450,7 +450,7 @@ When activated, the metrics endpoint will be accessible to the location `http://
 
 :::
 
-::: info
+:::info
 
 Additionally, a **Grafana template** has been created to easily setup a dashboard for this Prometheus endpoint (ID 20776): https://grafana.com/grafana/dashboards/20776-mithril-signer/
 

docs/website/versioned_docs/version-maintained/manual/getting-started/run-signer-node.md

@@ -450,7 +450,7 @@ When activated, the metrics endpoint will be accessible to the location `http://
 
 :::
 
-::: info
+:::info
 
 Additionally, a **Grafana template** has been created to easily setup a dashboard for this Prometheus endpoint (ID 20776): https://grafana.com/grafana/dashboards/20776-mithril-signer/