fixed index.en pages background

Author: amaksimovv

docs/js/home.js

@@ -1,10 +1,12 @@
 document.addEventListener("DOMContentLoaded", () => {
   const path = location.pathname;
+  const normalizedPath = path.replace(/\/+$/, "") || "/";
+
   if (
-    path === "/" ||
-    path.endsWith("/index.html") ||
-    path.match(/\/index\.[a-z]{2}\/?$/)
+    normalizedPath === "/" ||
+    normalizedPath === "/index.html" ||
+    normalizedPath.match(/^\/index\.[a-z]{2}$/)
   ) {
     document.body.classList.add("is-home");
   }
-});
+});