Update error handling and UI design across multiple files

Enhanced error handling in documentation and blog pages, to ensure smoother running and user experience. This also includes additional UI updates related to font selection, layout arrangement, and interactive elements on error pages, marketing pages, and general site navigation components. Moreover, a "contact us" feature has been added to error pages to help users seek assistance more conveniently.

apps/web/app/(marketing)/docs/layout.tsx

@@ -11,7 +11,7 @@ async function DocsLayout({ children }: React.PropsWithChildren) {
   const pages = await getDocs(resolvedLanguage);
 
   return (
-    <div className={'flex container'}>
+    <div className={'container flex'}>
       <DocsNavigation pages={buildDocumentationTree(pages)} />
 
       {children}