[DOCS] Move ML function reference out of appendix (#121111)

docs/reference/ml/anomaly-detection/functions/ml-count-functions.asciidoc

@@ -1,4 +1,4 @@
-["appendix",role="exclude",id="ml-count-functions"]
+[[ml-count-functions]]
 = Count functions
 
 Count functions detect anomalies when the number of events in a bucket is

docs/reference/ml/anomaly-detection/functions/ml-functions.asciidoc

@@ -1,4 +1,3 @@
-[role="xpack"]
 [[ml-functions]]
 = Function reference
 

docs/reference/ml/anomaly-detection/functions/ml-geo-functions.asciidoc

@@ -1,4 +1,4 @@
-["appendix",role="exclude",id="ml-geo-functions"]
+[[ml-geo-functions]]
 = Geographic functions
 
 The geographic functions detect anomalies in the geographic location of the

docs/reference/ml/anomaly-detection/functions/ml-info-functions.asciidoc

@@ -1,4 +1,4 @@
-["appendix",role="exclude",id="ml-info-functions"]
+[[ml-info-functions]]
 = Information content functions
 
 The information content functions detect anomalies in the amount of information

docs/reference/ml/anomaly-detection/functions/ml-metric-functions.asciidoc

@@ -1,4 +1,4 @@
-["appendix",role="exclude",id="ml-metric-functions"]
+[[ml-metric-functions]]
 = Metric functions
 
 The metric functions include functions such as mean, min and max. These values

docs/reference/ml/anomaly-detection/functions/ml-rare-functions.asciidoc

@@ -1,4 +1,4 @@
-["appendix",role="exclude",id="ml-rare-functions"]
+[[ml-rare-functions]]
 = Rare functions
 
 The rare functions detect values that occur rarely in time or rarely for a

docs/reference/ml/anomaly-detection/functions/ml-sum-functions.asciidoc

@@ -1,4 +1,4 @@
-["appendix",role="exclude",id="ml-sum-functions"]
+[[ml-sum-functions]]
 = Sum functions
 
 The sum functions detect anomalies when the sum of a field in a bucket is

docs/reference/ml/anomaly-detection/functions/ml-time-functions.asciidoc

@@ -1,4 +1,4 @@
-["appendix",role="exclude",id="ml-time-functions"]
+[[ml-time-functions]]
 = Time functions
 
 The time functions detect events that happen at unusual times, either of the day