Added/updated snippets for docs (#2318)

docs/doc_examples/cedb56a71cc743d80263ce352bb21720.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.transport.request({
+  method: "PUT",
+  path: "/_inference/sparse_embedding/my-elser-model",
+  body: {
+    service: "elser",
+    service_settings: {
+      num_allocations: 1,
+      num_threads: 1,
+    },
+  },
+});
+console.log(response);
+----