services: nix: Fix typo.

* gnu/services/nix.scm (<nix-configuration>): Fix typo.

diff --git a/gnu/services/nix.scm b/gnu/services/nix.scm
index 7c58f0e..ba94cfa 100644 (file)
--- a/gnu/services/nix.scm
+++ b/gnu/services/nix.scm
@@ -55,7 +55,7 @@
                        (default #t))
   (build-sandbox-items nix-configuration-build-sandbox-items ;list of strings
                        (default '()))
-  (extra-config        nix-configuration-extra-options ;list of strings
+  (extra-config        nix-configuration-extra-config ;list of strings
                        (default '())))
 
 ;; Copied from gnu/services/base.scm