change 'reduct' to 'reduce' (#298)

mmseg/datasets/pipelines/loading.py

@@ -91,7 +91,7 @@ class LoadAnnotations(object):
     """Load annotations for semantic segmentation.
 
     Args:
-        reduct_zero_label (bool): Whether reduce all label value by 1.
+        reduce_zero_label (bool): Whether reduce all label value by 1.
             Usually used for datasets where 0 is background label.
             Default: False.
         file_client_args (dict): Arguments to instantiate a FileClient.