[docs] move @html tutorial to end (partly fixing #7253) (#7254)

* Move @html tutorial to end

* move debug and html tag into one section

* rename

---------

Co-authored-by: Rémi Marche <[email protected]>
Co-authored-by: Simon H <[email protected]>
Co-authored-by: Simon Holthausen <[email protected]>

Author: ecstrema

site/content/tutorial/01-introduction/07-making-an-app/app-a/App.svelte renamed to site/content/tutorial/01-introduction/06-making-an-app/app-a/App.svelte

@@ -12,4 +12,4 @@ In Svelte, you do this with the special `{@html ...}` tag:
 <p>{@html string}</p>
 ```
 
-> Svelte doesn't perform any sanitization of the expression inside `{@html ...}` before it gets inserted into the DOM. In other words, if you use this feature it's critical that you manually escape HTML that comes from sources you don't trust, otherwise you risk exposing your users to XSS attacks.
+> **Warning!** Svelte doesn't perform any sanitization of the expression inside `{@html ...}` before it gets inserted into the DOM. In other words, if you use this feature it's **critical** that you manually escape HTML that comes from sources you don't trust, otherwise you risk exposing your users to XSS attacks.

site/content/tutorial/01-introduction/07-making-an-app/text.md renamed to site/content/tutorial/01-introduction/06-making-an-app/text.md

@@ -0,0 +1,3 @@
+{
+	"title": "Special tags"
+}