Fix typo in `mail-relay-service' documentation string.

diff --git a/src/edwin/sendmail.scm b/src/edwin/sendmail.scm
index 80894feaad81eef6b4085709647d5b482e2fd080..9d233d87bbdddaf850ee62195f6b303612ce899a 100644 (file)
--- a/src/edwin/sendmail.scm
+++ b/src/edwin/sendmail.scm
@@ -100,7 +100,7 @@ Otherwise, mail is sent directly to the named host using SMTP."
   "Service to connect to on the mail relay host.
 Can be a service name (a string), a service number, or #F.
 If #F, service \"smtp\" is used.
-This is used only of `mail-relay-host' is set."
+This is used only if `mail-relay-host' is set."
   #f
   (lambda (service)
     (or (not service)