docs: update hero

Author: Aetherinox

docs/material/overrides/home.html

@@ -16,8 +16,8 @@
     <div class="md-grid md-typeset">
       <div class="mdx-hero">
         <div class="mdx-hero__image">
-
-        </div>
+            <img src="https://github.com/Aetherinox/obsidian-gistr/assets/118329232/92b082ab-8c35-4e17-bf99-9ff8f54f7bd8" alt="" width="1659" height="1200" draggable="false">
+          </div>
         <div class="mdx-hero__content">
           <h1>Obsidian: Gistr</h1>
           <p>A Github and Opengist Integration for Obsidian.md</p>