Added/updated snippets for docs (#2318)

docs/doc_examples/fe208d94ec93eabf3bd06139fa70701e.asciidoc

@@ -0,0 +1,44 @@
+// 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.indices.putIndexTemplate({
+  name: "sensor-template",
+  index_patterns: ["sensor-*"],
+  data_stream: {},
+  template: {
+    lifecycle: {
+      downsampling: [
+        {
+          after: "1d",
+          fixed_interval: "1h",
+        },
+      ],
+    },
+    settings: {
+      "index.mode": "time_series",
+    },
+    mappings: {
+      properties: {
+        node: {
+          type: "keyword",
+          time_series_dimension: true,
+        },
+        temperature: {
+          type: "half_float",
+          time_series_metric: "gauge",
+        },
+        voltage: {
+          type: "half_float",
+          time_series_metric: "gauge",
+        },
+        "@timestamp": {
+          type: "date",
+        },
+      },
+    },
+  },
+});
+console.log(response);
+----