docs(animations): add hint for related challenges

docs/src/content/docs/challenges/angular/44-view-transition.md

@@ -10,6 +10,8 @@ sidebar:
 
 ## Information
 
+This is the second of two animation challenges, the goal of this series is to master animations in Angular.
+
 The View Transition API is a brand new API that provides a set of features that allow developers to control and manipulate the transitions and animations between views within an application.
 It plays a pivotal role in enhancing the user experience (UX), bringing applications to life with engaging and captivating transitions to guide users through different pages or sections of the app.
 

docs/src/content/docs/challenges/angular/46-simple-animations.md

@@ -11,6 +11,8 @@ sidebar:
 
 ## Information
 
+This is the first of two animation challenges, the goal of this series is to master animations in Angular.
+
 Well-designed animations can make your application more fun and straightforward to use, but they aren't just cosmetic. Animations can improve your application and user experience in a number of ways:
 
 - Without animations, web page transitions can seem abrupt and jarring.

docs/src/content/docs/pt/challenges/angular/44-view-transition.md

@@ -10,6 +10,8 @@ sidebar:
 
 ## Informação
 
+Este é o segundo de três desafios animation, sendo o objetivo dominar animations em Angular.
+
 A View Transition API é uma nova API que fornece um conjunto de funcionalidades, permitindo desenvolvedores controlarem e manipularem as transições e animações entre views dentro de uma aplicação.
 Isso tem um papel importante na melhoria da experiência do usuário (UX), trazendo vida a aplicações com transições atraentes e cativantes afim de guiar usuários por diferentes páginas e seções da aplicação.