Added/updated snippets for docs (#2318)

docs/doc_examples/9ba868784f417a8d3679b3c8ed5939ad.asciidoc

@@ -0,0 +1,21 @@
+// 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.ilm.putLifecycle({
+  name: "my_policy",
+  policy: {
+    phases: {
+      hot: {
+        actions: {
+          rollover: {
+            max_size: "100gb",
+          },
+        },
+      },
+    },
+  },
+});
+console.log(response);
+----