All reports of copyright-contains-dh_make-todo-boilerplate for the archive. The extended description of this tag is:
The string "Please also look if..." appears in the copyright file, which indicates that you either didn't check the whole source to find additional copyright/license, or that you didn't remove that paragraph after having done so.
Refer to Debian Policy Manual section 12.5 (Copyright information) for details.
This tag has not been emitted in any package tested by Lintian.