added not_between translation for NL

added not_between translation for NL

Author: Ruud-cb

src/i18n/nl.json

@@ -22,6 +22,7 @@
     "greater": "groter",
     "greater_or_equal": "groter of gelijk",
     "between": "tussen",
+    "not_between": "niet tussen",
     "begins_with": "begint met",
     "not_begins_with": "begint niet met",
     "contains": "bevat",
@@ -54,4 +55,4 @@
     "datetime_exceed_min": "Dient na {0}",
     "datetime_exceed_max": "Dient voor {0}"
   }
-}
+}