Add ICC logo to qrcode

Change-Id: I742011a665f80e84cba17e713d7b12499189e2ab
diff --git a/R/poster.Rmd b/R/poster.Rmd
index d144cc8..8feea6b 100644
--- a/R/poster.Rmd
+++ b/R/poster.Rmd
@@ -71,7 +71,7 @@
   email: icc@ids-manneim.de
   website: https://www.ids-mannheim.de/digspra/kl
   qrlink: >
-    `r posterdown::qrlink("https://korap.ids-mannheim.de/instance/icc")`
+    `r posterdown::qrlink("https://korap.ids-mannheim.de/instance/icc", "icc-logo-whitebg.svg")`
 
 output:
   posterdown::posterdown_ids: