Fix #2121 by making the hero logo path relative
Fix #2121 by making the hero logo path relative

mtian/SiteExtensionGallery,mtian/SiteExtensionGallery,projectkudu/SiteExtensionGallery,mtian/SiteExtensionGallery,ScottShingler/NuGetGallery,projectkudu/SiteExtensionGallery,grenade/NuGetGallery_download-count-patch,skbkontur/NuGetGallery,grenade/NuGetGallery_download-count-patch,ScottShingler/NuGetGallery,projectkudu/SiteExtensionGallery,grenade/NuGetGallery_download-count-patch,ScottShingler/NuGetGallery,skbkontur/NuGetGallery,skbkontur/NuGetGallery