Support C2 text siglen in vc conversion tool

Change-Id: I22b91d4e14baeb09c7c73d6dd9c4970ec489e992
diff --git a/tools/list2vc.pl b/tools/list2vc.pl
index 508f88f..c3fcd30 100755
--- a/tools/list2vc.pl
+++ b/tools/list2vc.pl
@@ -98,6 +98,9 @@
   };
 
   if ($key eq 'text') {
+
+    # Convert C2 sigle to KorAP form
+    $value =~ s!^([^/]+?/[^\.]+?)\.(.+?)$!$1\/$2!;
     push @{$data{text}}, $value;
   }