TD-4016: Deployement issue fix

Author: sarathlal-sarangadharan

WebAPI/LearningHub.Nhs.Database/Scripts/Pre-Deploy/Script.PreDeployment.sql

@@ -20,5 +20,5 @@ END
 GO
 
 --TD-4016-Remove character limit from catalogue description
-ALTER TABLE hierarchy.CatalogueNodeVersion ALTER COLUMN Description nvarchar(max);
+ALTER TABLE hierarchy.CatalogueNodeVersion ALTER COLUMN Description nvarchar(max) NULL;
 GO