update important message

docs/thehive/user-guides/analyst-corner/alerts/new-case-from-selection.md

@@ -16,9 +16,8 @@ A new window will open to facilitate the creation of the new case.
 
 ![New Case from Selection](../images/alerts-newcase-from-selection.png)
 
-## Important Notes
+!!! Warning "Important Notes"
+      - **Single Case Creation**: The **New Case from Selection** option allows the creation of only one case, regardless of how many alerts are selected.
+      - **Merge Action**: Similarly, the merge button also merges only one case at a time, regardless of the number of selected alerts.
 
-- **Single Case Creation**: The **New Case from Selection** option allows the creation of only one case, regardless of how many alerts are selected.
-- **Merge Action**: Similarly, the merge button also merges only one case at a time, regardless of the number of selected alerts.
-
-For bulk actions, such as creating multiple cases or merging multiple alerts, use the bulk action buttons available at the top of the alerts list.
+      For bulk actions, such as creating multiple cases or merging multiple alerts, use the bulk action buttons available at the top of the alerts list.