docs(solid-router): fix authenticated routes docs (#5827)

Author: birkskyum

docs/router/framework/solid/guide/authenticated-routes.md

@@ -1,4 +1,9 @@
 ---
 ref: docs/router/framework/react/guide/authenticated-routes.md
-replace: { 'react-router': 'solid-router' }
+replace:
+  {
+    'react-router': 'solid-router',
+    'auth.isAuthenticated': 'auth.isAuthenticated()',
+    'react': 'solid',
+  }
 ---