02/04: fix readme typo

Author: kettanaito

exercises/02.test-setup/04.problem.api-mocking/README.mdx

@@ -10,7 +10,7 @@
 npm i msw @msw/playwright --save-dev
 ```
 
-🐨 Next, head to the <InlineFile file="./tests/e2e/test-extend.ts">`tests/e2e/test-extend.ts`</InlineFile>. I've prepared a few instructions for you to help you implement a new fixture called `network`. As the name suggests, you're going to be using it to control the state of network in your end-to-end tests!
+🐨 Next, head to the <InlineFile file="./tests/test-extend.ts">`tests/test-extend.ts`</InlineFile>. I've prepared a few instructions for you to help you implement a new fixture called `network`. As the name suggests, you're going to be using it to control the state of network in your end-to-end tests!
 
 🐨 Once you've got the `network` fixture ready, it's time to put it into action. In the <InlineFile file="./tests/e2e/notes-create.test.ts">`tests/e2e/notes-create.test.ts`</InlineFile> test file, complete the test case for a new note creation. In this one, you'd have to intercept an HTTP request to the Google Places API that happens on the client to suggest a list of places for the note's "Location" field. As always, 🐨 Kody and his instructions will guide you to success.