fix(docs): update Dart and Flutter platform links in getting-started.mdx (#13062)

Author: periakteon

docs/product/insights/getting-started.mdx

@@ -80,7 +80,12 @@ If you don't already have performance monitoring enabled, use the links for supp
     url="/platforms/apple/guides/ios/tracing/"
   />
 
-- <PlatformLinkWithLogo platform="flutter" url="/platforms/dart/guides/flutter/tracing/" />
+- <PlatformLinkWithLogo
+    platform="dart"
+    url="/platforms/dart/tracing/"
+  />
+
+  - [Flutter](/platforms/dart/guides/flutter/tracing/)
 
 - <PlatformLinkWithLogo platform="native" url="/platforms/native/tracing/" />