Added/updated snippets for docs (#2318)

docs/doc_examples/12cb446446211f95f651e196a1f059b4.asciidoc

@@ -0,0 +1,12 @@
+// 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.snapshot.create({
+  repository: "my_repository",
+  snapshot: "my_snapshot",
+  wait_for_completion: "true",
+});
+console.log(response);
+----