base::syslog::fragment: correct variable name

Correct variable used to identified the syslog server to send output
to in base::syslog::fragment.

manifests/syslog/fragment.pp

@@ -35,11 +35,11 @@ define base::syslog::fragment(
 
   # Useful default template values
   if $syslog_target {
-    $logsink_server = $syslog_target
+    $syslog_server = $syslog_target
   } else {
-    $logsink_server = 'logsink.stanford.edu'
+    $syslog_server = 'logsink.stanford.edu'
   }
-
+  
   case $ensure {
 
     present: {