docs: last suggestions

Co-authored-by: Rene Pot <[email protected]>

docs/migration/v12.md

@@ -322,11 +322,11 @@ Here are some edge cases that were encountered when upgrading some apps with the
 
 ## Full list of breaking changes and deprecations
 
-Larger items are mentioned above, but these lists are included for completeness.
+The most likely and impactful breaking changes have been described in detail above. However this doesn't cover all the breaking changes and deprecations introduced in this upgrade. Below is the exhausted list. 
 
 ### Breaking changes
 
-1. Node 18 || 20+ is required
+1. Node 18 or Node 20+ is required. Node 19 is not supported.
 2. JSX in files without .jsx or .tsx extensions is not supported by default
 3. React 18: Most significant testing changes are described above; the rest can be read about in the React [migration guide](https://react.dev/blog/2022/03/08/react-18-upgrade-guide)
 4. Flow types won't work, although this is a motivator for extensible config