feat: translate all pages, UI messages and docs and fix SEO redirects and indexing

src/pages/sanitize-pdf.html

@@ -150,7 +150,7 @@
         <div id="tool-options" class="hidden mt-6 space-y-4">
           <div class="p-4 bg-gray-900 rounded-lg border border-gray-700">
             <h3 class="text-sm font-semibold text-white mb-3">
-              Sanitization Optionst:
+              Sanitization Options:
             </h3>
             <div class="space-y-2">
               <label class="flex items-center gap-2 cursor-pointer">