Added/updated snippets for docs (#2318)

docs/doc_examples/75e6d66e94e61bd8a555beaaee255c36.asciidoc

@@ -0,0 +1,18 @@
+// 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.rollup.rollupSearch({
+  index: "sensor_rollup",
+  size: 0,
+  aggregations: {
+    avg_temperature: {
+      avg: {
+        field: "temperature",
+      },
+    },
+  },
+});
+console.log(response);
+----