Point 8.x prebuilt rule pages to the 9.x prebuilt rules reference

resources/asciidoctor/lib/chunker/url_to_v3.rb

@@ -3,6 +3,10 @@
 module Chunker
   # Add a warning to the page with a link to docs v3
   class UrlToV3
+    # Versioned rule pages, like prebuilt-rule-8-19-14-<rule>.html
+    PREBUILT_RULE = %r{\A/en/security/\*/prebuilt-rule-\d+-\d+-\d+-(.+)\z}
+    PREBUILT_RULES_HUB = '/docs/reference/security/prebuilt-rules'
+
     attr_reader :url
 
     def initialize(doc)
@@ -16,6 +20,8 @@ def initialize(doc)
       actual_url = get_actual_url(outdir, current_url)
       new_url = if m.key?(actual_url)
                   m[actual_url]
+                elsif (rule = actual_url[PREBUILT_RULE, 1])
+                  m.fetch("/en/security/*/#{rule}", PREBUILT_RULES_HUB)
                 else
                   '/docs'
                 end

resources/asciidoctor/lib/chunker/v3-mapping.json

@@ -12097,7 +12097,9 @@
     "/en/security/*/powershell-suspicious-script-with-screenshot-capabilities.html": "/docs/reference/security/prebuilt-rules/rules/windows/collection_posh_screen_grabber",
     "/en/security/*/prebuilt-ml-jobs.html": "/docs/reference/data-analysis/machine-learning/ootb-ml-jobs-siem",
     "/en/security/*/prebuilt-rules-api.html": "/docs/api/doc/kibana/operation/operation-installprebuiltrulesandtimelines",
+    "/en/security/*/prebuilt-rules-downloadable-updates.html": "/docs/reference/security/prebuilt-rules",
     "/en/security/*/prebuilt-rules-management.html": "/docs/solutions/security/detect-and-alert/install-manage-elastic-prebuilt-rules",
+    "/en/security/*/prebuilt-rules.html": "/docs/reference/security/prebuilt-rules",
     "/en/security/*/printer-user-lp-shell-execution.html": "/docs/reference/security/prebuilt-rules/rules/linux/execution_cupsd_foomatic_rip_lp_user_execution",
     "/en/security/*/private-key-searching-activity.html": "/docs/reference/security/prebuilt-rules/rules/linux/discovery_private_key_password_searching_activity",
     "/en/security/*/privilege-escalation-via-cap-chown-cap-fowner-capabilities.html": "/docs/reference/security/prebuilt-rules/rules/linux/privilege_escalation_suspicious_chown_fowner_elevation",