Removes extra image

Author: nastasha-solomon

docs/detections/notes-page-timeline-details.png

@@ -1,6 +1,32 @@
 [[release-notes-header-8.16.0]]
 == 8.16
 
+[discrete]
+[[known-issue-8.16.1]]
+==== Known issues
+
+// tag::known-issue[]
+[discrete]
+.Duplicate alerts can be produced from manually running threshold rules 
+[%collapsible]
+====
+*Details* +
+On November 12, 2024, it was discovered that manually running threshold rules could produce duplicate alerts if the date range was already covered by a scheduled rule execution.
+
+====
+// end::known-issue[]
+
+// tag::known-issue[]
+[discrete]
+.Manually running custom query rules with suppression could suppress more alerts than expected
+[%collapsible]
+====
+*Details* +
+On November 12, 2024, it was discovered that manually running a custom query rule with suppression could incorrectly inflate the number of suppressed alerts. 
+
+====
+// end::known-issue[]
+
 [discrete]
 [[release-notes-8.16.1]]
 === 8.16.1