Correct "nonunihan" to "nounihan"

src/gen-ucd-table.py

@@ -7,7 +7,7 @@ import logging
 logging.basicConfig(format='%(levelname)s: %(message)s', level=logging.INFO)
 
 if len (sys.argv) != 2:
-	print("usage: ./gen-ucd-table ucd.nonunihan.grouped.xml", file=sys.stderr)
+	print("usage: ./gen-ucd-table ucd.nounihan.grouped.xml", file=sys.stderr)
 	sys.exit(1)
 
 # https://github.com/harfbuzz/packtab
@@ -90,7 +90,7 @@ print("/* == Start of generated table == */")
 print("/*")
 print(" * The following table is generated by running:")
 print(" *")
-print(" *   ./gen-ucd-table.py ucd.nonunihan.grouped.xml")
+print(" *   ./gen-ucd-table.py ucd.nounihan.grouped.xml")
 print(" *")
 print(" * on file with this description:", ucdxml.description)
 print(" */")

src/hb-ucd-table.hh

@@ -2,7 +2,7 @@
 /*
  * The following table is generated by running:
  *
- *   ./gen-ucd-table.py ucd.nonunihan.grouped.xml
+ *   ./gen-ucd-table.py ucd.nounihan.grouped.xml
  *
  * on file with this description: Unicode 12.1.0
  */