change Black Box status

Black Box relies on upstream VTE support, like Tilix and Guake, so
we similarly mark it as unsupported, since SIXEL is disabled by default
on most builds of VTE.

Thanks to @iambumblehead for catching this!

Fixes #9.

Author: smasher164

content/_index.md

@@ -14,9 +14,9 @@ Related PR: https://github.com/alacritty/alacritty/pull/4763
 
 # Black Box
 
-{{< supported >}}
+{{< unsupported >}}
 
-From version 0.13.0: https://gitlab.gnome.org/raggesilver/blackbox/-/tags/v0.13.0.
+Relies on upstream VTE support: https://gitlab.gnome.org/GNOME/vte/-/issues/253
 
 ---
 

docs/index.html

@@ -239,10 +239,10 @@ <h1 id="alacritty">Alacritty<a href="#alacritty" class="hanchor" ariaLabel="Anch
 <hr>
 <h1 id="black-box">Black Box<a href="#black-box" class="hanchor" ariaLabel="Anchor">&#8983;</a> </h1>
 <p class="status">
-	Status: Supported
-	<img class="supported-svg" aria-label="supported" src="/supported.svg"/>
+	Status: Unsupported
+	<img class="unsupported-svg" aria-label="unsupported" src="/unsupported.svg"/>
 </p>
-<p>From version 0.13.0: <a href="https://gitlab.gnome.org/raggesilver/blackbox/-/tags/v0.13.0">https://gitlab.gnome.org/raggesilver/blackbox/-/tags/v0.13.0</a>.</p>
+<p>Relies on upstream VTE support: <a href="https://gitlab.gnome.org/GNOME/vte/-/issues/253">https://gitlab.gnome.org/GNOME/vte/-/issues/253</a></p>
 <hr>
 <h1 id="bobcat">Bobcat<a href="#bobcat" class="hanchor" ariaLabel="Anchor">&#8983;</a> </h1>
 <p class="status">