Update src/app/page.tsx

Merge version_2 into main

src/app/layout.tsx

@@ -1392,4 +1392,4 @@ export default function RootLayout({
       </body>
     </html>
   );
-}
+}

src/app/page.tsx

@@ -224,7 +224,7 @@ export default function AirbusA320Portal() {
           description="Interested in aviation education, A320 training resources, or partnership opportunities? Subscribe to our newsletter for the latest updates on aircraft systems, pilot training content, and aviation industry insights."
           background={{ variant: "sparkles-gradient" }}
           useInvertedBackground={false}
-          buttonText="Subscribe"
+          buttonText="Join Our Newsletter"
           inputPlaceholder="Enter your email address"
           termsText="We respect your privacy. Unsubscribe at any time. By subscribing, you agree to receive updates about aviation education and A320 technical content."
         />
@@ -264,4 +264,4 @@ export default function AirbusA320Portal() {
       </div>
     </ThemeProvider>
   );
-}
+}