Add sentence emphasizing that it is unlikely to have issues

src/rust-2024/rustdoc-doctests.md

@@ -73,4 +73,4 @@ This example is sensitive to the code structure of how the example is compiled.
 
 ## Migration
 
-There is no automatic migration to determine which doctests need to be annotated with the `standalone` tag. You will need to update your crate to the 2024 Edition and then run your documentation tests and see if any of them fail. If they do fail, you will need to analyze whether the test can be rewritten to be compatible with the combined approach, or add the `standalone` tag to retain the previous behavior.
+There is no automatic migration to determine which doctests need to be annotated with the `standalone` tag. It's very unlikely that doctests will not work correctly when merged. The only way to know is to update your crate to the 2024 Edition and then run your documentation tests and see if any of them fail. If they do fail, you will need to analyze whether the test can be rewritten to be compatible with the combined approach, or add the `standalone` tag to retain the previous behavior.