Update Node instructions for serverless with AWS Lambda

__tests__/__snapshots__/documentation.js.snap

@@ -332,6 +332,7 @@ Array [
   "platforms/node/index.html",
   "platforms/node/koa/index.html",
   "platforms/node/pluggable-integrations/index.html",
+  "platforms/node/serverless/index.html",
   "platforms/node/sourcemaps/index.html",
   "platforms/node/typescript/index.html",
   "platforms/php/default-integrations/index.html",

src/collections/_documentation/platforms/node/serverless.md

@@ -0,0 +1,34 @@
+---
+title: Serverless
+sidebar_order: 7
+---
+
+## AWS Lambda
+
+To set up Sentry error logging for a Lambda function, build a wrapper.
+
+```javascript
+"use strict";
+
+const Sentry = require("@sentry/node");
+
+Sentry.init({
+  dsn: "YOUR DSN"
+});
+
+function sentryHandler(lambdaHandler) {
+  return async event => {
+    try {
+      return await lambdaHandler(event);
+    } catch (error) {
+      Sentry.captureException(error);
+      await Sentry.flush(2000);
+      return error;
+    }
+  };
+}
+
+module.exports.hello = sentryHandler(async event => {
+  throw new Error("asd");
+});
+```