Merge pull request #914 from Yakindu/issue_#690_doc_state

Image link fixed.

plugins/org.yakindu.sct.doc.user/src/user-guide/statechart_language.textile

@@ -173,7 +173,7 @@ p.
 Figure ""Event specifications syntax overview"":#fig_transition-syntax-overview shows where to put event specifications in a reaction trigger and how their syntax is defined.
 
 p(#fig_event-specifications-syntax-overview). 
-!(standard-image)images/docu_grammar_030_event-specification.png(Event specifications syntax overview)!
+!(standard-image)images/docu_grammar_030_event-specification-overview.png(Event specifications syntax overview)!
 
 p=. Event specifications syntax overview