Fixes typo in README.mdx (#13)

Author: kenrett

exercises/02.server-components/01.problem.rsc/README.mdx

@@ -4,7 +4,7 @@
 props to our components. Additionally, we're sending a bunch of code to the
 client to render a page that really doesn't need to be on the client. We want
 you to solve both of these problems by using `react-server-dom-esm` which will
-allow us to generated serialized JSX on the server and render it in the browser.
+allow us to generate serialized JSX on the server and render it in the browser.
 
 ## 🦉 `react-server` export