Refer Signup page to Signup function from Firebase

src/App.js

@@ -54,7 +54,7 @@ function App() {
           <Route path="/" element={<Home greeting="Hey you're at home!" />} />
           <Route path="/about" element={<About greeting="Hey you, this is about page!" handler={saySomething} />} />
           <Route path="/contact" element={<Contact greeting="Hey you, this is contact page!" />} />
-          <Route path="/signup" element={<Signup />} />
+          <Route path="/signup" element={<Signup handler={signUp}/>} />
         </Routes>
       </div>
     );