fixes typo

step03.md

@@ -82,6 +82,6 @@ If you see this, congratulations! You have built yourself a server!
 | request | A request is the message sent via HTTP from the client to the server, asking for information. |
 | response | A response is the data sent back to the client from the server after an HTTP request is made. |
 | `require()` | Require is used in Node.js to import functionality from another file or an external module. |
-| rodule | A module is a bit of reusable code, written by you or someone else, that can be imported into a Node.js project using require. |
+| module | A module is a bit of reusable code, written by you or someone else, that can be imported into a Node.js project using require. |
 | method | Method is another name for a function. |
 | port | A port is a number that serves as an endpoint, determining where you can access your web application. |