update documentation (state diagram)

README.md

@@ -26,8 +26,7 @@ These diagrams roughly serves as the specifications for adapting ATDB for LDV.
   * workflow: https://support.astron.nl/confluence/display/LDV/WORKFLOW
   * datamodel: https://dbdiagram.io/d/5ffc5fb180d742080a35d560
 
-## Overview Diagrams (under construction)
-These diagrams are the core of the ATDB documentation.
+## Overview Diagrams
 
 ### Datamodel:
   * https://drive.google.com/file/d/1v5hMBQS0jT8DQJwySVISfRa1zF4o0fCQ/view?usp=sharing