Fix reference to Gingko foundry

Change-Id: I26c28a573ad638f612cb25b2f3829f25d18ad034
diff --git a/lib/KorAP/XML/Annotation/Gingko/Morpho.pm b/lib/KorAP/XML/Annotation/Gingko/Morpho.pm
index 6897a3c..fb12b21 100644
--- a/lib/KorAP/XML/Annotation/Gingko/Morpho.pm
+++ b/lib/KorAP/XML/Annotation/Gingko/Morpho.pm
@@ -23,7 +23,7 @@
         # pos tag
         if (($name eq 'pos') &&
               ($found = $f->{'#text'})) {
-          $mtt->add_by_term('ginkgo/p:' . $found);
+          $mtt->add_by_term('gingko/p:' . $found);
         }
 
         # lemma tag