added steps to correct content type in minio

data_store/repositories/annotation_repository.py

@@ -23,6 +23,7 @@ class AnnotationRepository(MinioAdapter, AnnotationRepositoryInterface):
 
     encoding: str = "utf-8"
     data_format: str = "json"
+    content_type: str = "application/json"
     folder_name: str = "annotations"
 
     @classmethod
@@ -81,7 +82,7 @@ class AnnotationRepository(MinioAdapter, AnnotationRepositoryInterface):
         buffer = BytesIO(data_bytes)
         # Put object
         object_name = self._object_name(job_id)
-        self._put(object_name, buffer)
+        self._put(object_name, buffer, self.content_type)
 
     def delete(self, job_id: UUID) -> None:
         """Delete an Annotation by its job ID."""