Added/updated snippets for docs (#2318)

docs/doc_examples/d49318764244113ad2ac4cc0f06d77ec.asciidoc

@@ -0,0 +1,24 @@
+// 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.create({
+  index: "image-index",
+  mappings: {
+    properties: {
+      "image-vector": {
+        type: "dense_vector",
+        dims: 3,
+        similarity: "l2_norm",
+        index_options: {
+          type: "hnsw",
+          m: 32,
+          ef_construction: 100,
+        },
+      },
+    },
+  },
+});
+console.log(response);
+----