Fix typo

Author: gaearon

beta/src/content/apis/react-dom/server/renderToReadableStream.md

@@ -135,7 +135,7 @@ const assetMap = {
 async function handler(request) {
   const stream = await renderToReadableStream(<App assetMap={assetMap} />, {
     // Careful: It's safe to stringify() this because this data isn't user-generated.
-    bootstrapScriptContents: `window.assetMap = ${JSON.stringify(assetMap)};`,
+    bootstrapScriptContent: `window.assetMap = ${JSON.stringify(assetMap)};`,
     bootstrapScripts: [assets['/main.js']],
   });
   return new Response(stream, {
@@ -144,7 +144,7 @@ async function handler(request) {
 }
 ```
 
-In the example above, the `bootstrapScriptContents` option adds an extra inline `<script>` tag that sets the global `window.assetMap` variable on the client. This lets the client code read the same `assetMap`:
+In the example above, the `bootstrapScriptContent` option adds an extra inline `<script>` tag that sets the global `window.assetMap` variable on the client. This lets the client code read the same `assetMap`:
 
 ```js {4}
 import {hydrateRoot} from 'react-dom/client';