replace hardcoded version
diff --git a/Modules/unicodedata.c b/Modules/unicodedata.c
index 901e337..f4d3608 100644
--- a/Modules/unicodedata.c
+++ b/Modules/unicodedata.c
@@ -1322,7 +1322,7 @@
"This module provides access to the Unicode Character Database which\n\
defines character properties for all Unicode characters. The data in\n\
this database is based on the UnicodeData.txt file version\n\
-6.0.0 which is publically available from ftp://ftp.unicode.org/.\n\
+" UNIDATA_VERSION " which is publically available from ftp://ftp.unicode.org/.\n\
\n\
The module uses the same names and symbols as defined by the\n\
UnicodeData File Format " UNIDATA_VERSION ".");