docs: add link to user guide

Author: kenjis

admin/starter/tests/README.md

@@ -31,8 +31,8 @@ for code coverage to be calculated successfully.
 A number of the tests use a running database. 
 In order to set up the database edit the details for the `tests` group in 
 **app/Config/Database.php** or **phpunit.xml**. Make sure that you provide a database engine 
-that is currently running on your machine. More details on a test database setup are in the 
-*Docs>>Testing>>Testing Your Database* section of the documentation.
+that is currently running on your machine. More details on a test database setup are in the
+[Testing Your Database](https://codeigniter4.github.io/userguide/testing/database.html) section of the documentation.
 
 If you want to run the tests without using live database you can 
 exclude @DatabaseLive group. Or make a copy of **phpunit.dist.xml** -