Update kibana MITRE version to v14.1 [classic] (#4774)

* Update MITRE reference to 14.0

* Update from 14.0 to 14.1

* Add link to MITRE ATT&CK version updates page

* Further edits to phrasing

* Test commit

* Another test commit

docs/detections/rules-coverage.asciidoc

@@ -12,7 +12,7 @@ Mirroring the MITRE ATT&CK® framework, columns represent major tactics, and cel
 
 [NOTE]
 ====
-This page only includes the detection rules you currently have installed, and only rules that are mapped to MITRE ATT&CK® tactics. Additionally, rules must be mapped to the MITRE ATT&CK® version used by {elastic-sec}: `v13.1`. Elastic prebuilt rules that aren't installed and custom rules that are either unmapped or mapped to a deprecated tactic or technique will not be included.
+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-october-2023[MITRE ATT&CK® version] used by {elastic-sec}: `v14.1`. 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.
 ====