docs: Update incorrect export name on the mocking modules page (#8962)

Author: benholland1024

docs/guide/mocking/modules.md

@@ -2,7 +2,7 @@
 
 ## Defining a Module
 
-Before mocking a "module", we should define what it is. In Vitest context, the "module" is a file that exports something. Using [plugins](https://vite.dev/guide/api-plugin.html), any file can be turned into a JavaScript module. The "module object" is a namespace object that holds dynamic references to exported identifiers. Simply put, it's an object with exported methods and properties. In this example, `example.js` is a module that exports `method` and `variable`:
+Before mocking a "module", we should define what it is. In Vitest context, the "module" is a file that exports something. Using [plugins](https://vite.dev/guide/api-plugin.html), any file can be turned into a JavaScript module. The "module object" is a namespace object that holds dynamic references to exported identifiers. Simply put, it's an object with exported methods and properties. In this example, `example.js` is a module that exports `answer` and `variable`:
 
 ```js [example.js]
 export function answer() {