docs: fix whitespace after a link (angular#61136)

PR Close angular#61136

Author: arty-name

adev/src/content/tutorials/learn-angular/steps/20-inject-based-di/README.md

@@ -2,7 +2,7 @@
 
 Creating an injectable service is the first part of the dependency injection (DI) system in Angular. How do you inject a service into a component? Angular has a convenient function called `inject()` that can be used in the proper context.
 
-NOTE: Injection contexts are beyond the scope of this tutorial, but you can learn more in the [dependency injection (DI) essentials guide](/essentials/dependency-injection)and [DI context guide](guide/di/dependency-injection-context).
+NOTE: Injection contexts are beyond the scope of this tutorial, but you can learn more in the [dependency injection (DI) essentials guide](/essentials/dependency-injection) and [DI context guide](guide/di/dependency-injection-context).
 
 In this activity, you'll learn how to inject a service and use it in a component.