remove .html from index

Author: sylv256

_layouts/index.html

@@ -6,9 +6,9 @@
     <img src="/images/backthematic.webp" alt="MuonMC thematic background image">
     <div class="big-image-text">
         <p>The modloader that works.</p>
-        <a href="/download.html" class="button-round-generic button-download">
+        <a href="/download" class="button-round-generic button-download">
            Download</a>
-        <a href="/develop.html" class="button-round-generic button-develop">
+        <a href="/develop" class="button-round-generic button-develop">
             Develop</a>
     </div>
 </header>