All reports of doc-base-document-field-ends-in-whitespace for the archive. The extended description of this tag is:
The Document field in a doc-base file should not end in whitespace. doc-base (at least as of 0.8.5) cannot cope with such fields and debhelper 5.0.57 or earlier may create files ending in whitespace when installing such files.
This tag has not been emitted in any package tested by Lintian.