Added/updated snippets for docs (#2318)

docs/doc_examples/d80ac403d8d936ca9dec185c7da13f2f.asciidoc

@@ -0,0 +1,14 @@
+// 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.putScript({
+  id: "my-stored-script",
+  script: {
+    lang: "painless",
+    source: "Math.log(_score * 2) + params['my_modifier']",
+  },
+});
+console.log(response);
+----