fix broken link

Author: HomelessDinosaur

docs/guides/dart/flutter.mdx

@@ -25,7 +25,7 @@ To get started make sure you have the following prerequisites installed:
 
 - [Dart](https://dart.dev/get-dart)
 - [Flutter](https://docs.flutter.dev/get-started/install)
-- The [Nitric CLI](/getting-started/installation)
+- The [Nitric CLI](/get-started/installation)
 - An [AWS](https://aws.amazon.com), [Google Cloud](https://cloud.google.com) or [Azure](https://azure.microsoft.com) account (_your choice_)
 
 Start by making sure your environment is set up correctly with Flutter for web development.