chore: apply suggestions from code review

Co-authored-by: Zaiming (Stone) Shi <zmstone@gmail.com>

changes/ce/feat-12396.en.md

@@ -1,5 +1,4 @@
 Enhanced the `authentication/:id/import_users` interface for a more user-friendly user import feature:
 
-- Add new query parameter `type=plain` to support importing users with plaintext passwords,
-  not just hashed ciphertext passwords.
-- Support `content-type: application/json` to accept HTTP Body in JSON format, not just file.
+- Add new parameter `?type=plain` to support importing users with plaintext passwords in extension to the current solution which only supports password hash.
+- Support `content-type: application/json` to accept HTTP Body in JSON format in extension to the current solution which only supports `multipart/form-data` for csv format.