Use slashes as separators in siglen

Change-Id: I368a0e0be8880a0608c7fba1f13ce5688d22973a
diff --git a/t/sgbr/meta_duden.t b/t/sgbr/meta_duden.t
index c808022..a375307 100644
--- a/t/sgbr/meta_duden.t
+++ b/t/sgbr/meta_duden.t
@@ -20,8 +20,8 @@
 like($doc->path, qr!$path/!, 'Path');
 
 # Metdata
-is($doc->text_sigle, 'PRO-DUD_BSP-2013-01.32', 'ID-text');
-is($doc->doc_sigle, 'PRO-DUD_BSP-2013-01', 'ID-doc');
+is($doc->text_sigle, 'PRO-DUD/BSP-2013-01/32', 'ID-text');
+is($doc->doc_sigle, 'PRO-DUD/BSP-2013-01', 'ID-doc');
 is($doc->corpus_sigle, 'PRO-DUD', 'ID-corpus');
 
 my $meta = $doc->meta;