update styles & js (#256)

Author: Arhell

_includes/meta.html

@@ -51,13 +51,13 @@
     <meta name="msapplication-TileColor" content="#273646">
     <meta name="theme-color" content="#273646">
     <script>document.documentElement.classList.add(localStorage.getItem('mode') === 'auto' ? (matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light') : localStorage.getItem('mode'))</script>
-    <script type="module" src="./../assets/js/theme-switcher.js"></script>
+    <script type="module" src="https://assets.phalcon.io/phalcon/js/theme.min.js"></script>
 
     <link rel="stylesheet"
-          href="./../assets/css/dark.css">
+          href="https://assets.phalcon.io/phalcon/css/dark.min.css">
 
     <link rel="stylesheet"
-          href="https://assets.phalcon.io/phalcon/test/core.css">
+          href="https://assets.phalcon.io/phalcon/css/core.min.css">
     <link rel="stylesheet"
-          href="https://assets.phalcon.io/phalcon/test/custom.css">
+          href="https://assets.phalcon.io/phalcon/css/custom.min.css">