Update threshold-alert.asciidoc (#4349) (#4484)

Hey, team, I'm sending this pull request because a customer asked about the bars from the preview chart. It was only showing 3 bars instead of 4, as the customer was expecting to see. However, this is hardcoded and will only show the top 3. (cherry picked from commit 992facd) Co-authored-by: Artur Moura <[email protected]>
elastic · Nov 6, 2024 · 410d762 · 410d762
1 parent 6c4ed76
commit 410d762
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diff --git a/docs/en/observability/threshold-alert.asciidoc b/docs/en/observability/threshold-alert.asciidoc
@@ -91,6 +91,8 @@ The shaded area shows the threshold you've set.
 [role="screenshot"]
 image::images/custom-threshold-preview-chart.png[Custom threshold preview chart,75%]
 
+If you use the **Group alerts by** option, the maximum bar size will be 3. It will only show the top 3 fields.
+
 [discrete]
 [[custom-threshold-group-by]]
 == Group alerts by (optional)