add the sign up button

src/pages/GetInvolved.astro

@@ -11,6 +11,17 @@ import "../styles/globals.css";
       <Navbar />
       <div class="pl-4 pr-4">
         <h1 class="text-3xl font-semibold">Get Involved</h1>
+        
+        <div class="my-8">
+          <a 
+            href="https://shlink.resisttechmonopolies.online/HNrZG" 
+            class="px-6 py-3 bg-[#80aaff] text-white font-semibold rounded-md hover:bg-[#6090e0] transition-colors"
+            target="_blank"
+            rel="noopener noreferrer"
+          >
+            Sign Up Here
+          </a>
+        </div>
       </div>
     </div>
     <Footer />