UX: Update Setup, Settings, and Help pages with user-friendly text

- Setup: Changed 'Add Keywords' to 'Find Keywords'
- Account Settings: Updated description to be more user-friendly
- AI Settings: Updated description to explain AI models and preferences
- General Settings: Changed to 'App Preferences' with clearer description
- Help: Changed 'Help & Documentation' to 'Help Center' with friendlier description

frontend/src/pages/Help/Help.tsx

@@ -138,16 +138,16 @@ export default function Help() {
 
   return (
     <>
-      <PageMeta title="Help & Documentation - IGNY8" description="Complete documentation and guides for IGNY8" />
+      <PageMeta title="Help Center - IGNY8" description="Guides and tutorials to help you create great content" />
       
       <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8">
         {/* Header */}
         <div className="mb-8">
           <h1 className="text-4xl font-bold text-gray-900 dark:text-white mb-4">
-            Help & Documentation
+            Help Center
           </h1>
           <p className="text-lg text-gray-600 dark:text-gray-400">
-            Complete guides and documentation to help you get the most out of IGNY8
+            Learn how to use IGNY8 to create and publish amazing content
           </p>
         </div>