[ML] Use 'anomaly-detector' in job config doc name (#36254)

Author: davidkyle

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/datafeed/DatafeedConfig.java

@@ -219,7 +219,7 @@ public DatafeedConfig(StreamInput in) throws IOException {
      * @return The ID of document the datafeed config is persisted in
      */
     public static String documentId(String datafeedId) {
-        return "datafeed-" + datafeedId;
+        return TYPE + "-" + datafeedId;
     }
 
     public String getId() {

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ml/job/config/Job.java

@@ -238,7 +238,7 @@ public static String documentId(String jobId) {
             throw new IllegalArgumentException(Messages.getMessage(Messages.JOB_CONFIG_ID_TOO_LONG, MlStrings.ID_LENGTH_LIMIT));
         }
 
-        return "job-" + jobId;
+        return ANOMALY_DETECTOR_JOB_TYPE + "-" + jobId;
     }