Fixed typo (vercel#40608)

Author: saalimzafar

examples/with-passport-and-next-connect/pages/signup.js

@@ -16,7 +16,7 @@ export default function SignupPage() {
       name: e.currentTarget.name.value,
     }
 
-    if (body.password !== e.currentTarget.rpassword.value) {
+    if (body.password !== e.currentTarget.password.value) {
       setErrorMsg(`The passwords don't match`)
       return
     }