examples: Adjust for the renaming of Containment::setWallpaper
It was renamed to Containment::setWallpaperPlugin in [1]. Fixes the build with -DBUILD_EXAMPLES:BOOL=TRUE.
[1] eba31f88
It was renamed to Containment::setWallpaperPlugin in [1]. Fixes the build with -DBUILD_EXAMPLES:BOOL=TRUE.
[1] eba31f88