Added/updated snippets for docs (#2318)

docs/doc_examples/a6b2815d54df34b6b8d00226e9a1af0c.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.indices.create({
+  index: "my-index",
+  mappings: {
+    properties: {
+      "my_embeddings.predicted_value": {
+        type: "dense_vector",
+        dims: 384,
+      },
+      my_text_field: {
+        type: "text",
+      },
+    },
+  },
+});
+console.log(response);
+----