feat: add Learn More button to About section with documentation link

src/components/About.tsx

@@ -1,4 +1,5 @@
 import { AppStoreLink } from '@/components/AppStoreLink'
+import { Button } from '@/components/Button'
 import { CircleBackground } from '@/components/CircleBackground'
 import { Container } from '@/components/Container'
 
@@ -22,6 +23,15 @@ export function About() {
           <p className="mt-6 text-lg text-gray-300">
             Our mission is to create a sustainable digital ecosystem where communication is seamless, data is secure, and scalability knows no bounds.
           </p>
+          <div className="mt-8 flex justify-center">
+            <Button
+              href="https://docs.ourworld.tf/mycelium_cloud/docs/"
+              target="_blank"
+              variant="outline"
+            >
+              Learn More
+            </Button>
+          </div>
         </div>
       </Container>
     </section>