CNDE-2334 Fix alter page case answer (#236)

Co-authored-by: Varshinee Venkatesan

Author: VarshineeVenkat

liquibase-service/src/main/resources/db/rdb_modern/tables/014-create_nrt_page_case_answer-001.sql

@@ -65,7 +65,7 @@ IF EXISTS (SELECT 1 FROM sysobjects WHERE name = 'nrt_page_case_answer' and xtyp
             END;  
 
 
-        IF NOT EXISTS(SELECT 1 FROM sys.columns WHERE Name = N'nbs_rdb_metadata_uid' AND Object_ID = Object_ID(N'nrt_page_case_answer'))
+        IF EXISTS(SELECT 1 FROM sys.columns WHERE Name = N'nbs_rdb_metadata_uid' AND Object_ID = Object_ID(N'nrt_page_case_answer'))
             BEGIN
                 ALTER TABLE dbo.nrt_page_case_answer ALTER COLUMN nbs_rdb_metadata_uid bigint NULL;
             END;