docs: typo in demo (#371)

Author: Zih0

docs/demo/src/content/tutorial/1-forms-css/3-fieldset/6-the-end/content.md

@@ -6,6 +6,6 @@ focus: /style.css
 ---
 You've reached the end of this tutorial! We hope you've enjoyed it and learned something new about working with CSS and forms.
 
-This app was built using the TutorialKit framework and you can make a similiar learning resource for your team or open-source community yourself! TutorialKit provides all the necessary tooling, and UI out of the box, so that you can focus on the content.
+This app was built using the TutorialKit framework and you can make a similar learning resource for your team or open-source community yourself! TutorialKit provides all the necessary tooling, and UI out of the box, so that you can focus on the content.
 
 To learn more, visit <a href="https://tutorialkit.dev">tutorialkit.dev</a>.