docs: updated introduction.md (#2483)

* Update introduction.md

Improved clarity in Prerequisites section and added relevant links.

* Update introduction.md

Added Next Steps section to end of document

* docs: Update src/guide/introduction.md

* docs: remove duplicate section on next steps

* style: remove extra new space

---------

Co-authored-by: Ben Hong <ben@bencodezen.io>

Author: 2 people

src/guide/introduction.md

@@ -91,7 +91,7 @@ The above example demonstrates the two core features of Vue:
 You may already have questions - don't worry. We will cover every little detail in the rest of the documentation. For now, please read along so you can have a high-level understanding of what Vue offers.
 
 :::tip Prerequisites
-The rest of the documentation assumes basic familiarity with HTML, CSS, and JavaScript. If you are totally new to frontend development, it might not be the best idea to jump right into a framework as your first step - grasp the basics and then come back! You can check your knowledge level with [this JavaScript overview](https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript). Prior experience with other frameworks helps, but is not required.
+The rest of the documentation assumes basic familiarity with HTML, CSS, and JavaScript. If you are totally new to frontend development, it might not be the best idea to jump right into a framework as your first step - grasp the basics and then come back! You can check your knowledge level with these overviews for [JavaScript](https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript), [HTML](https://developer.mozilla.org/en-US/docs/Learn/HTML/Introduction_to_HTML) and [CSS](https://developer.mozilla.org/en-US/docs/Learn/CSS/First_steps) if needed. Prior experience with other frameworks helps, but is not required.
 :::
 
 ## The Progressive Framework {#the-progressive-framework}
@@ -281,3 +281,4 @@ Different developers have different learning styles. Feel free to pick a learnin
     <p class="next-steps-caption">Explore examples of core features and common UI tasks.</p>
   </a>
 </div>
+