Update title of course

src/components/GenerateCourse/AICourseLessonChat.tsx

@@ -236,7 +236,10 @@ export function AICourseLessonChat(props: AICourseLessonChatProps) {
         </button>
 
         <div className="flex items-center justify-between gap-2 border-b border-gray-200 px-4 py-2 text-sm">
-          <h4 className="text-base font-medium">Course AI</h4>
+          <h4 className="flex items-center gap-2 text-base font-medium">
+            <Bot className="size-5 shrink-0 text-black relative -top-[1px]" strokeWidth={2.5} />
+            AI Instructor
+          </h4>
           <button
             onClick={onClose}
             className="hidden rounded-md px-2 py-2 text-xs font-medium text-gray-500 hover:bg-gray-100 hover:text-black lg:block"