Update plan-pricing.md

Fix broken link that should lead to FlutterFlow pricing page.

Author: rabarijaona

docs/accounts-billing/plan-pricing.md

@@ -8,9 +8,9 @@ sidebar_position: 2
 
 # Plans & Pricing
 :::note
-For our most upto date information, please visit **[FlutterFlow pricing](https://flutterflow.io/pricing.html)**.
+For our most up-to-date information, please visit **[FlutterFlow pricing](https://flutterflow.io/pricing)**.
 :::
 
 :::note
 Regional discounts are available, please **[log in to FlutterFlow](https://app.flutterflow.io/)** to see the pricing for your region.
-:::
+:::