Added/updated snippets for docs (#2318)

docs/doc_examples/e48e7da65c2b32d724fd7e3bfa175c6f.asciidoc

@@ -0,0 +1,12 @@
+// This file is autogenerated, DO NOT EDIT
+// Use `node scripts/generate-docs-examples.js` to generate the docs examples
+
+[source, js]
+----
+const response = await client.ml.getOverallBuckets({
+  job_id: "job-*",
+  overall_score: 80,
+  start: 1403532000000,
+});
+console.log(response);
+----