Fixups for QG.write_configs

Co-authored-by: Andy Salnikov <salnikov@slac.stanford.edu>

python/lsst/pipe/base/graph/graph.py

@@ -1569,7 +1569,7 @@ def write_configs(self, butler: LimitedButler, compare_existing: bool = True) ->
         ------
         lsst.daf.butler.registry.ConflictingDefinitionError
             Raised if an config dataset already exists and
-            ``skip_existing=False``, or if the existing config is not
+            ``compare_existing=False``, or if the existing config is not
             consistent with the config in the quantum graph.
         """
         to_put: list[tuple[PipelineTaskConfig, DatasetRef]] = []
@@ -1590,7 +1590,7 @@ def write_configs(self, butler: LimitedButler, compare_existing: bool = True) ->
                 if not task_node.config.compare(old_config, shortcut=False, output=log_config_mismatch):
                     raise ConflictingDefinitionError(
                         f"Config does not match existing task config {dataset_type_name!r} in "
-                        "butler; tasks configurations must be consistent within the same run collection"
+                        "butler; tasks configurations must be consistent within the same run collection."
                     )
             else:
                 to_put.append((task_node.config, ref))