Media.md

@@ -9,5 +9,5 @@ Meanwhile see: https://gitlab2.informatik.uni-wuerzburg.de/decker/decker/-/blob/
 Most media files displayed in a Decker presentation can be included using the following syntax:
 
 ```
-![caption](file-location){parameters} 
+![optional caption](file-location){parameters} 
 ```
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