fix: dart run command path in installation guide (#4)

Author: DCodeProg

src/content/docs/guide/installation.mdx

@@ -152,7 +152,7 @@ Finally, you can run your application with the following command.
 :::code-group auto
 
 ```bash
-dart run src/main.dart
+dart run bin/main.dart
 ```
 
 :::