Updated Spanish.txt with entries from DW-Espanol-1.txt

Author: nitz

README.md

@@ -45,4 +45,6 @@ KeePassDiceware makes use of licensed portions of code, each licensed under thei
 
 - [Diceware Word List](https://theworld.com/~reinhold/dicewarewordlist.pdf) - Free, non-commercial, distribution of the entire text with attribution. All other rights reserved. - Copyright (c) 1995-2004 Arnold G. Reinhold
 
-- German Diceware Word List compiled from [DeReKo 2014 term frequency list](https://www1.ids-mannheim.de/kl/projekte/methoden/derewo.html) - CC BY-NC 3.0 - Leibniz-Institut für Deutsche Sprache
+- [Spanish Diceware Word List](https://theworld.com/~reinhold/diceware_espanol/DW-Espanol-1.txt) - GFDL 1.1, Copyright © 2003 by Manuel Palao, CISM, CISA (manuel@palao.com)
+
+- German Diceware Word List compiled from [DeReKo 2014 term frequency list](https://www1.ids-mannheim.de/kl/projekte/methoden/derewo.html) - CC BY-NC 3.0 - Leibniz-Institut für Deutsche Sprache