[hotfix] [docu] Add missing tick
diff --git a/docs/setup/config.md b/docs/setup/config.md
index 1ce6d56..5bc1255 100644
--- a/docs/setup/config.md
+++ b/docs/setup/config.md
@@ -330,7 +330,7 @@
 
 - `metrics.scope.tm.task`: (Default: <host>.taskmanager.<tm_id>.<job_name>.<task_name>.<subtask_index>) Defines the scope format string that is applied to all metrics scoped to a task.
 
-- `metrics.scope.tm.operator: (Default: <host>.taskmanager.<tm_id>.<job_name>.<operator_name>.<subtask_index>) Defines the scope format string that is applied to all metrics scoped to an operator.
+- `metrics.scope.tm.operator`: (Default: <host>.taskmanager.<tm_id>.<job_name>.<operator_name>.<subtask_index>) Defines the scope format string that is applied to all metrics scoped to an operator.
 
 ## Background