Increase article div width to 1100px to match navbar

Co-authored-by: brunoborges <129743+brunoborges@users.noreply.github.com>

Author: Copilot

site/styles.css

@@ -836,7 +836,7 @@ nav {
 
 /* ---------- Article Page ---------- */
 .article {
-  max-width: 900px;
+  max-width: 1100px;
   margin: 0 auto;
   padding: 40px 24px 80px;
 }