Create new detection rule set documentation to be included in the new docs.

docs-dev/experimental-machine-learning/url-spoof.md

@@ -81,7 +81,6 @@ You can optionally choose to refresh your index mapping from within Kibana:
 
 ### 6. Upload detection rule(s)
 
-
 You can upload the rules associated with the *URL Spoofing* framework using the instructions provided [here](https://github.com/elastic/detection-rules/blob/main/docs-dev/experimental-machine-learning/experimental-detections.md)
 
 

docs/docset.yml

@@ -0,0 +1,16 @@
+project: 'detection rules'
+cross_links:
+  - docs-content
+exclude:
+  - '_*.md'
+  - 'README.md'
+subs:
+  stack: Elastic Stack
+
+extensions:
+  - detection-rules
+
+toc:
+  - file: index.md
+    detection_rules: '../rules'
+

docs/index.md

@@ -0,0 +1,3 @@
+# Detection rules
+
+Landing / overview page