fix: minor draft service/repo fixes

fix a copy-pasted docstring; add a rollback

Author: chisholm

src/dioptra/restapi/db/repository/drafts.py

@@ -426,8 +426,8 @@ def get_by_filters_paged(
                 for unlimited length
 
         Returns:
-            A 2-tuple including a page of Group objects, and a count of the
-            total number of groups matching the criteria
+            A 2-tuple including a page of DraftResource objects, and a count
+            of the total number of drafts matching the criteria
 
         Raises:
             EntityDoesNotExistError: if the given user does not exist, or if

src/dioptra/restapi/v1/shared/drafts/service.py

@@ -445,11 +445,15 @@ def modify(
                 provided_resource_snapshot_id=payload["resource_snapshot_id"],
             )
 
-        self._uow.drafts_repo.update(
-            draft,
-            payload["resource_data"],
-            payload["resource_snapshot_id"],
-        )
+        try:
+            self._uow.drafts_repo.update(
+                draft,
+                payload["resource_data"],
+                payload["resource_snapshot_id"],
+            )
+        except Exception:
+            self._uow.rollback()
+            raise
 
         if commit:
             self._uow.commit()