docs(mge/functional): fix doctest

GitOrigin-RevId: 45b6e1147ec72cecdd7c25de2074b498cd8abc70

python_module/megengine/functional/utils.py

@@ -26,7 +26,8 @@ def _decide_comp_node_and_comp_graph(*args: mgb.SymbolVar):
 def accuracy(
     logits: Tensor, target: Tensor, topk: Union[int, Iterable[int]] = 1
 ) -> Union[Tensor, Iterable[Tensor]]:
-    r"""Calculate the classification accuracy given predicted logits and ground-truth labels.
+    r"""
+    Calculate the classification accuracy given predicted logits and ground-truth labels.
 
     :param logits: Model predictions of shape [batch_size, num_classes],
         representing the probability (likelyhood) of each class.