* configure.ac: Fix spacing in helptext of customs

Copyright-paperwork-exempt: yes
diff --git a/configure.ac b/configure.ac
index 97fd090..8afa51d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -249,8 +249,8 @@
 AC_SUBST([REMOTE]) REMOTE=stub
 use_customs=false
 AC_ARG_WITH([customs],
-[ AC_HELP_STRING([--with-customs=DIR],
-                 [enable remote jobs via Customs--see README.customs])],
+[AC_HELP_STRING([--with-customs=DIR],
+                [enable remote jobs via Customs--see README.customs])],
 [ AS_CASE([$withval], [n|no], [:],
     [make_cppflags="$CPPFLAGS"
      AS_CASE([$withval],