Apply hints suggested by the multi-arch hinter

Apply hints suggested by the multi-arch hinter.

• whitedune-docs: Add Multi-Arch: foreign. This fixes: whitedune-docs could be marked Multi-Arch: foreign. (ma-foreign)

These changes were suggested on https://wiki.debian.org/MultiArch/Hints.

This merge proposal was created automatically by the Janitor bot. For more information, including instructions on how to disable these merge proposals, see https://janitor.debian.net/multiarch-fixes.

You can follow up to this merge proposal as you normally would.

The bot will automatically update the merge proposal to resolve merge conflicts or close the merge proposal when all changes are applied through other means (e.g. cherry-picks). Updates may take several hours to propagate.

Build and test logs for this branch can be found at https://janitor.debian.net/multiarch-fixes/pkg/whitedune/76f3e52d-71b3-4805-8204-9d835b951e5e.

Debdiff

These changes affect the binary packages:

[The following lists of changes regard files as different if they have different names, permissions or owners.]

Files in second set of .debs but not in first

-rw-r--r--  root/root   /usr/lib/debug/.build-id/12/927ae3ff0e8a17f89796495a725c553c9e4f50.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/51/5ebd38a3163a3936ac07867ca0987e18c0c48d.debug

No differences were encountered between the control files of package **whitedune**

Control files of package whitedune-dbgsym: lines which differ (wdiff format)

• Build-Ids: 515ebd38a3163a3936ac07867ca0987e18c0c48d 12927ae3ff0e8a17f89796495a725c553c9e4f50

Control files of package whitedune-docs: lines which differ (wdiff format)

• Multi-Arch: foreign

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