Updating upgrading editions.md

Author: mdbiscan

guides/release/upgrading/editions.md

@@ -1854,13 +1854,13 @@ bindings will not work:
   This does not work, since @value is
   an argument and is immutable
 -->
-{{input value=@value}}
+<Input value=@value />
 
 <!--
   Instead, we should update the value
   by passing an _action_ to the component
 -->
-{{input value=@value key-up=@updateValue}}
+<Input value=@value key-up=@updateValue />
 ```
 
 Additionally, the `mut` helper generally can't be used for the same reason: