Changed link to online datamodel

Moved to SQL DB from QuickDBD (pricing model change made this non-fit for purpose).

Author: RoelantVos

README.md

@@ -1,4 +1,4 @@
 # DIRECT
 Data Integration Run-time Execution Control Tool
 
-- The data model is located here: https://app.quickdatabasediagrams.com/#/schema/UpruvHsPc0ifDl2-w1PdIA
+- The data model is located here: https://app.sqldbm.com/SQLServer/Share/0422MQDFKzUXcanT_pUY4EGFrngIE8md_DYjF4jNYw0. This has been moved to SQL DBM from QuickDBD after their pricing model was changed.