fix(data-access): get all site candidates table name (#487)

Please ensure your pull request adheres to the following guidelines:
- [ ] make sure to link the related issues in this description
- [ ] when merging / squashing, make sure the fixed issue references are
visible in the commits, for easy compilation of release notes

## Related Issues


Thanks for contributing!

packages/spacecat-shared-data-access/src/service/site-candidates/accessPatterns.js

@@ -23,7 +23,7 @@ import { SiteCandidateDto } from '../../dto/site-candidate.js';
  */
 export const getSiteCandidates = async (dynamoClient, config) => {
   const dynamoItems = await dynamoClient.scan({
-    TableName: config.tableNameSites,
+    TableName: config.tableNameSiteCandidates,
   });
 
   return dynamoItems.map((dynamoItem) => SiteCandidateDto.fromDynamoItem(dynamoItem));