[Backport 8.15] Added/updated snippets for docs (#2319)

(cherry picked from commit f737290d10)

Co-authored-by: Josh Mock <joshua.mock@elastic.co>

docs/doc_examples/2bc1d52efec2076dc9fc2a3a2d90e8ab.asciidoc

@@ -0,0 +1,19 @@
+// 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.search({
+  index: "latency",
+  size: 0,
+  aggs: {
+    load_time_boxplot: {
+      boxplot: {
+        field: "load_time",
+        execution_hint: "high_accuracy",
+      },
+    },
+  },
+});
+console.log(response);
+----