Use SimpleFigure in OpenDocument writer.

Author: argent0

src/Text/Pandoc/Writers/OpenDocument.hs

@@ -377,7 +377,7 @@ blockToOpenDocument o = \case
     Plain          b -> if null b
                         then return empty
                         else inParagraphTags =<< inlinesToOpenDocument o b
-    Para [Image attr c (s,T.stripPrefix "fig:" -> Just t)] -> figure attr c s t
+    SimpleFigure attr c s t -> figure attr c s t
     Para           b -> if null b &&
                            not (isEnabled Ext_empty_paragraphs o)
                         then return empty