[DOCS] Allow attribute substitution in titleabbrevs for Asciidoctor migration (#41574)

Author: jrodewig

docs/reference/ml/apis/delete-datafeed.asciidoc

@@ -2,6 +2,8 @@
 [testenv="platinum"]
 [[ml-delete-datafeed]]
 === Delete {dfeeds} API
+
+[subs="attributes"]
 ++++
 <titleabbrev>Delete {dfeeds}</titleabbrev>
 ++++

docs/reference/ml/apis/get-datafeed-stats.asciidoc

@@ -2,6 +2,8 @@
 [testenv="platinum"]
 [[ml-get-datafeed-stats]]
 === Get {dfeed} statistics API
+
+[subs="attributes"]
 ++++
 <titleabbrev>Get {dfeed} statistics</titleabbrev>
 ++++

docs/reference/ml/apis/get-datafeed.asciidoc

@@ -2,6 +2,8 @@
 [testenv="platinum"]
 [[ml-get-datafeed]]
 === Get {dfeeds} API
+
+[subs="attributes"]
 ++++
 <titleabbrev>Get {dfeeds}</titleabbrev>
 ++++

docs/reference/ml/apis/get-ml-info.asciidoc

@@ -2,6 +2,8 @@
 [testenv="platinum"]
 [[get-ml-info]]
 === Get machine learning info API
+
+[subs="attributes"]
 ++++
 <titleabbrev>Get {ml} info</titleabbrev>
 ++++

docs/reference/ml/apis/preview-datafeed.asciidoc

@@ -2,6 +2,8 @@
 [testenv="platinum"]
 [[ml-preview-datafeed]]
 === Preview {dfeeds} API
+
+[subs="attributes"]
 ++++
 <titleabbrev>Preview {dfeeds}</titleabbrev>
 ++++

docs/reference/ml/apis/put-datafeed.asciidoc

@@ -2,6 +2,8 @@
 [testenv="platinum"]
 [[ml-put-datafeed]]
 === Create {dfeeds} API
+
+[subs="attributes"]
 ++++
 <titleabbrev>Create {dfeeds}</titleabbrev>
 ++++

docs/reference/ml/apis/start-datafeed.asciidoc

@@ -2,6 +2,8 @@
 [testenv="platinum"]
 [[ml-start-datafeed]]
 === Start {dfeeds} API
+
+[subs="attributes"]
 ++++
 <titleabbrev>Start {dfeeds}</titleabbrev>
 ++++

docs/reference/ml/apis/stop-datafeed.asciidoc

@@ -2,6 +2,8 @@
 [testenv="platinum"]
 [[ml-stop-datafeed]]
 === Stop {dfeeds} API
+
+[subs="attributes"]
 ++++
 <titleabbrev>Stop {dfeeds}</titleabbrev>
 ++++

docs/reference/ml/apis/update-datafeed.asciidoc

@@ -2,6 +2,8 @@
 [testenv="platinum"]
 [[ml-update-datafeed]]
 === Update {dfeeds} API
+
+[subs="attributes"]
 ++++
 <titleabbrev>Update {dfeeds}</titleabbrev>
 ++++

docs/reference/monitoring/configuring-metricbeat.asciidoc

@@ -2,6 +2,8 @@
 [testenv="gold"]
 [[configuring-metricbeat]]
 === Collecting {es} monitoring data with {metricbeat}
+
+[subs="attributes"]
 ++++
 <titleabbrev>Collecting monitoring data with {metricbeat}</titleabbrev>
 ++++

docs/reference/settings/notification-settings.asciidoc

@@ -1,6 +1,8 @@
 [role="xpack"]
 [[notification-settings]]
-=== {watcher} Settings in Elasticsearch
+=== {watcher} settings in Elasticsearch
+
+[subs="attributes"]
 ++++
 <titleabbrev>{watcher} Settings</titleabbrev>
 ++++