updates mitre docs (#6797)

Co-authored-by: Nastasha Solomon <[email protected]>
(cherry picked from commit 2a0bcd9)

Author: 2 people

docs/detections/rules-coverage.asciidoc

@@ -14,7 +14,7 @@ To access the **MITRE ATT&CK® coverage** page, find **Detection rules (SIEM)**
 
 [NOTE]
 ====
-This page only includes the detection rules you currently have installed, and only rules that are mapped to MITRE ATT&CK®. The coverage page maps detections to the following https://attack.mitre.org/resources/updates/updates-april-2024[MITRE ATT&CK® version] used by {elastic-sec}: `v15.1`. Elastic prebuilt rules that aren't installed and custom rules that are either unmapped or mapped to a deprecated tactic or technique will not appear on the coverage map.
+This page only includes the detection rules you currently have installed, and only rules that are mapped to MITRE ATT&CK®. The coverage page maps detections to the following https://attack.mitre.org/resources/updates/updates-april-2024[MITRE ATT&CK® version] used by {elastic-sec}: `v16.1`. Elastic prebuilt rules that aren't installed and custom rules that are either unmapped or mapped to a deprecated tactic or technique will not appear on the coverage map.
 
 You can map custom rules to tactics in **Advanced settings** when creating or editing a rule.
 ====