Minor fix for lighttpd example in README
Minor fix for lighttpd example in README

Signed-off-by: pixdrift <support@pixeldrift.net>

Closes: #590
Approved by: rhatdan

rhatdan/buildah,rhatdan/buildah,nalind/buildah-1,nalind/buildah-1,TomSweeneyRedHat/buildah,nalind/buildah,TomSweeneyRedHat/buildah,ipbabble/buildah,ipbabble/buildah,rhatdan/buildah,projectatomic/buildah,nalind/buildah-1,nalind/buildah,projectatomic/buildah,projectatomic/buildah,TomSweeneyRedHat/buildah