this paragraph from debian/copyright triggers a few false positives:
==========
Files: debian/source/lintian-overrides
Copyright: © 2014 Pedro Pérez Pérez
© 2015 Wang Wang and Funi
© 2016 F. Ree License
License: GPL-2.0+
==========
spelling-error-in-copyright Wang Wang (duplicate word) Wang
spelling-error-in-copyright License License (duplicate word) License
The copyright field contains names. Names shouldn't be subject to
spellchecking.
And I happen to know a guy from Spain with a similar "duplicate" family
name.
Field labels shouldn't be checked either, nor should different fields
be concatenated (with their labels inbetween).
(I initially triggered this with
Copyright: no copyright notice, see License
License: public-domain
...
)