Move ids poster to posterdown_ids and restore original posterdown_html

Change-Id: Ib44b4020134c403a2946d0fc4b79777e9ecbe3ac
diff --git a/DESCRIPTION b/DESCRIPTION
index a991555..6aec2a2 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -29,5 +29,5 @@
 Encoding: UTF-8
 LazyData: true
 VignetteBuilder: knitr
-RoxygenNote: 6.1.1
+RoxygenNote: 7.2.3
 Roxygen: list(markdown = TRUE)