Fixed broken link (#1002)

Author: Jethro87

docs/guides/testing-guide.mdx

@@ -50,7 +50,7 @@ This ensures that no subscriptions are missed during the receipt import process.
 
 ### Using RevenueCat Paywalls
 
-To ensure that you are making use out of our [Paywalls](https://www.revenuecat.com/docs/tools/paywalls) tool correctly, please follow the instructions [here](https://www.revenuecat.com/docs/tools/paywalls/displaying-paywalls) for how to create a paywall in the RevenueCat dashboard and display it to your users with the RevenueCat SDK. We also have a [testing guide](https://github.com/RevenueCat/docusaurus/pull/testing-guide/use-cases) which details common testing use cases.
+To ensure that you are making use out of our [Paywalls](https://www.revenuecat.com/docs/tools/paywalls) tool correctly, please follow the instructions [here](https://www.revenuecat.com/docs/tools/paywalls/displaying-paywalls) for how to create a paywall in the RevenueCat dashboard and display it to your users with the RevenueCat SDK. We also have a [testing guide](/guides/testing-guide/use-cases) which details common testing use cases.
 
 ### Placements & Targeting