fix typo in v5.md (#8230)

Author: andy-k

docs/upgrading/v5.md

@@ -455,7 +455,7 @@ function Users() {
     <div>
       <h2>
         {/* This links to /users - the current route */}
-        <Link to=".">Users</Link>{
+        <Link to=".">Users</Link>
       </h2>
 
       <ul>