unity: clarify symbol upload (#5398)

Co-authored-by: Stefan Jandl <reg@bitfox.at>

Author: bruno-garcia

src/platforms/unity/configuration/il2cpp.mdx

@@ -12,8 +12,6 @@ IL2CPP line number support is available in Beta and requires version 0.22.0 or l
 
 <Note>
 
-IL2CPP line number support relies on the debug symbol upload to function properly. With the automated debug symbol upload enabled, the Sentry SDK will upload the line mapping through Sentry CLI.
-
 The feature is available from Unity versions `2020.3` and `2021.3` onwards. We are running tests in CI against the current LTS, starting from `2020.3.37f1` and `2021.3.6f1`.
 
 </Note>
@@ -35,3 +33,5 @@ You can opt in to this feature through the editor configuration window by select
 ```csharp
 options.Il2CppLineNumberSupportEnabled = true;
 ```
+
+The support for line numbers in C# Exceptions with IL2CPP relies on the debug symbol upload. With the automated debug symbol upload enabled, the [Sentry SDK will upload the line mapping automatically](/platforms/unity/native-support/#debug-symbols).