doc: consistently refer to 'fixed-output' with a dash

General cleanup that makes it easier to search for the term.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 147093fae..6258bcb33 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -3155,7 +3155,7 @@ void DerivationGoal::runChild()
                 // Only use nss functions to resolve hosts and
                 // services. Don’t use it for anything else that may
                 // be configured for this system. This limits the
-                // potential impurities introduced in fixed outputs.
+                // potential impurities introduced in fixed-outputs.
                 writeFile(chrootRootDir + "/etc/nsswitch.conf", "hosts: files dns\nservices: files\n");
 
                 ss.push_back("/etc/services");