nls: Update translations.

* po/doc/guix-cookbook.es.po: New file.
* po/doc/local.mk: Add 'es' cookbook.
* doc/local.mk: Add 'es' cookbook.

doc/local.mk

@@ -23,7 +23,7 @@
 
 # If adding a language, update the following variables, and info_TEXINFOS.
 MANUAL_LANGUAGES = de es fa fr it ko pt_BR ru sk zh_CN
-COOKBOOK_LANGUAGES = de fa fr ko ru sk zh_Hans
+COOKBOOK_LANGUAGES = de es fa fr ko ru sk zh_Hans
 
 # Arg1: A list of languages codes.
 # Arg2: The file name stem.
@@ -44,6 +44,7 @@ info_TEXINFOS = %D%/guix.texi			\
   %D%/guix.zh_CN.texi				\
   %D%/guix-cookbook.texi			\
   %D%/guix-cookbook.de.texi			\
+  %D%/guix-cookbook.es.texi			\
   %D%/guix-cookbook.fa.texi			\
   %D%/guix-cookbook.fr.texi			\
   %D%/guix-cookbook.ko.texi			\

po/doc/local.mk

@@ -31,6 +31,7 @@ DOC_PO_FILES =					\
 
 DOC_COOKBOOK_PO_FILES =				\
   %D%/guix-cookbook.de.po			\
+  %D%/guix-cookbook.es.po			\
   %D%/guix-cookbook.fa.po			\
   %D%/guix-cookbook.fr.po			\
   %D%/guix-cookbook.ko.po			\