Added/updated snippets for docs (#2318)

docs/doc_examples/c208de54369379e8d78ab201be18b6be.asciidoc

@@ -0,0 +1,34 @@
+// 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-000001",
+  mappings: {
+    dynamic_templates: [
+      {
+        longs_as_strings: {
+          match_mapping_type: "string",
+          match: "long_*",
+          unmatch: "*_text",
+          mapping: {
+            type: "long",
+          },
+        },
+      },
+    ],
+  },
+});
+console.log(response);
+
+const response1 = await client.index({
+  index: "my-index-000001",
+  id: 1,
+  document: {
+    long_num: "5",
+    long_text: "foo",
+  },
+});
+console.log(response1);
+----