fix hello.d
fix hello.d

wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection,wellflat/hello-collection