Mention that sb3fix is not made by Scratch

Author: GarboMuffin

src/index.html

@@ -172,6 +172,7 @@ <h1>sb3fix - fix corrupted Scratch projects</h1>
       </p>
       <p>
         If you use TurboWarp, please first try File &gt; Restore Points to access a previous version of your project.
+        sb3fix is a community project and is not affiliated with the Scratch Team.
       </p>
       <p>
         <span class="new">New!</span>