doc: typo in *stdnull* example.

* txr.1: Fix misspelled *stderr* in example demonstrating
binding of *stderr* to *stdnull*.

1 files changed, 1 insertions, 1 deletions

diff --git a/txr.1 b/txr.1
index 53e81e1c..1f17f673 100644
--- a/txr.1
+++ b/txr.1
@@ -60161,7 +60161,7 @@ execution of external utilities.
 
 .verb
   ;; redirect output of ls *.txt command to /dev/null
-  (let ((*stderr *stdnull*))
+  (let ((*stderr* *stdnull*))
     (sh "ls *.txt"))
 .brev