stackable-box: Remove an extra line in a doc comment

11 jobs for wip/exalm/line in 17 minutes and 8 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #251324
librem5
api-visibility

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passed #251326
librem5
build-debian-clang

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passed #251325
librem5
build-debian-gcc

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passed #251327
librem5
build-fedora-gcc

00:03:19

 
  Test+Docs
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librem5
build-gtkdoc

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passed #251329
librem5
unit-test

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41.9%
 
  Package
passed #251330
librem5
package-debian-buster

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passed #251331
librem5:arm64
package-debian-buster:arm64

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passed #251332
flatpak
package-flatpak

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  Test Package
passed #251333
librem5
autopkgtest-debian-buster-package

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passed #251334
librem5
lintian-debian-buster-package

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