fix: fix link to test-types.md

Author: lukasnys

guides/release/testing/testing-tools.md

@@ -52,7 +52,7 @@ test("should allow disabling the button", async function (assert) {
 
 ### Ember CLI
 
-When you use [Ember CLI](https://ember-cli.com/generators-and-blueprints) to generate an Ember "object" (e.g. component, model, service), it will create a test file with a setup that correctly addresses your testing framework and the [type of test that you should write](./test-types).
+When you use [Ember CLI](https://ember-cli.com/generators-and-blueprints) to generate an Ember "object" (e.g. component, model, service), it will create a test file with a setup that correctly addresses your testing framework and the [type of test that you should write](../test-types).
 
 You can also use Ember CLI to create the test file separately from the object. For example, if you enter the following lines in the terminal: