#18176: updated stdtypes UCD link, added reminder to makeunicodedata.

Patch by Alexander Belopolsky.
diff --git a/Tools/unicode/makeunicodedata.py b/Tools/unicode/makeunicodedata.py
index 0942508..0aebdca 100644
--- a/Tools/unicode/makeunicodedata.py
+++ b/Tools/unicode/makeunicodedata.py
@@ -37,6 +37,10 @@
 VERSION = "3.2"
 
 # The Unicode Database
+# --------------------
+# When changing UCD version please update
+#   * Doc/library/stdtypes.rst, and
+#   * Doc/library/unicodedata.rst
 UNIDATA_VERSION = "6.3.0"
 UNICODE_DATA = "UnicodeData%s.txt"
 COMPOSITION_EXCLUSIONS = "CompositionExclusions%s.txt"