Fix package webhook (#27839) (#27854)

Backport #27839 by @lunny

Fix #23742

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>

services/convert/package.go

@@ -35,6 +35,7 @@ func ToPackage(ctx context.Context, pd *packages.PackageDescriptor, doer *user_m
 		Name:       pd.Package.Name,
 		Version:    pd.Version.Version,
 		CreatedAt:  pd.Version.CreatedUnix.AsTime(),
+		HTMLURL:    pd.FullWebLink(),
 	}, nil
 }