Update file README.md

README.md

@@ -5,7 +5,7 @@ They have to be publicly available somewhere due that the "!include" directive o
 
 The UML files of EMERALD typically include several common files to define common graphical elements (arrows, colors, names, etc.). For example:
 
-```plantuml
+```
 
 @startuml RCM Sequence Diagram
 !include ../roles.wsd