Lintian tag information: multiple-distributions-in-changes-file (type: error)

Description (from lintian-explain-tags)

You've specified more than one target distribution for your upload in the
*.changes file, probably via the most recent entry in the debian/changelog
file.

Although this syntax is valid, it is not accepted by the Debian archive
management software. This may not be a problem if this upload is targeted
at an archive other than Debian's.

Please refer to Distribution (Section 5.6.14) in the Debian Policy Manual
for details.

Visibility: error
Show-Always: no
Check: fields/distribution

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