[v10.4.x] alerting:clarify silence preview (#83838)

alerting:clarify silence preview (#83754)

* alerting:clarify silence preview

* prettier

* Update docs/sources/alerting/configure-notifications/create-silence.md

Co-authored-by: brendamuir <100768211+brendamuir@users.noreply.github.com>

* Lint docs

---------

Co-authored-by: Armand Grillet <2117580+armandgrillet@users.noreply.github.com>
Co-authored-by: brendamuir <100768211+brendamuir@users.noreply.github.com>
(cherry picked from commit 89575f1df4)

Co-authored-by: tonypowa <45235678+tonypowa@users.noreply.github.com>

docs/sources/alerting/manage-notifications/create-silence.md

@@ -26,7 +26,11 @@ weight: 410
 
 Silences stop notifications from getting created and last for only a specified window of time.
 
-**Note that inhibition rules are not supported in the Grafana Alertmanager.**
+{{< admonition type="note" >}}
+
+- Inhibition rules are not supported in the Grafana Alertmanager.
+- The preview of silenced alerts only applies to alerts in firing state.
+  {{< /admonition >}}
 
 ## Add silences
 
@@ -38,7 +42,7 @@ To add a silence, complete the following steps.
 1. Click **Create silence** to open the Create silence page.
 1. In **Silence start and end**, select the start and end date to indicate when the silence should go into effect and expire.
 1. Optionally, in **Duration**, specify how long the silence is enforced. This automatically updates the end time in the **Silence start and end** field.
-1. In the **Label** and **Value** fields, enter one or more _Matching Labels_. Matchers determine which rules the silence will apply to.
+1. In the **Label** and **Value** fields, enter one or more _Matching Labels_. Matchers determine which rules the silence will apply to. Any matching alerts (in firing state) will show in the **Affected alert instances** field
 1. In **Comment**, add details about the silence.
 1. Click **Submit**.