Fixed #28710 -- Fixed the Basque DATE_FORMAT string

Thanks Eneko Illarramendi for the report and initial patch.

django/conf/locale/eu/formats.py

@@ -2,7 +2,7 @@
 #
 # The *_FORMAT strings use the Django date format syntax,
 # see http://docs.djangoproject.com/en/dev/ref/templates/builtins/#date
-DATE_FORMAT = r'Yeko M\re\n d\a'
+DATE_FORMAT = r'Y\k\o N j\a'
 TIME_FORMAT = 'H:i'
 # DATETIME_FORMAT =
 # YEAR_MONTH_FORMAT =