[ucd] Add URL to dependencies

diff --git a/src/gen-ucd-table.py b/src/gen-ucd-table.py
index 5c1bbdb..3d5b8d2 100755 (executable)
--- a/src/gen-ucd-table.py
+++ b/src/gen-ucd-table.py
@@ -8,6 +8,9 @@ if len (sys.argv) != 2:
        print("usage: ./gen-ucd-table ucd.nonunihan.grouped.xml", file=sys.stderr)
        sys.exit(1)
 
+
+# https://github.com/harfbuzz/packtab
+# https://github.com/harfbuzz/youseedy
 import youseedy, packTab
 
 ucdxml = youseedy.load_ucdxml(sys.argv[1])