[Docathon][Fix System Message No.16] (PaddlePaddle#58741)

* Update clip_grad_value_.py

* Apply suggestions from code review

* Update clip_grad_value_.py

python/paddle/nn/utils/clip_grad_value_.py

@@ -22,13 +22,15 @@ def clip_grad_value_(
     parameters,
     clip_value,
 ):
-    r"""Clips gradient of an iterable of parameters at specified value.
+    r"""
+    Clips gradient of an iterable of parameters at specified value.
     The gradient will be modified in place.
     This API can only run in dynamic graph mode, not static graph mode.
+
     Args:
-        parameters (Iterable[paddle.Tensor] or paddle.Tensor): Tensors or a single Tensor
+        parameters (Iterable[paddle.Tensor]|paddle.Tensor): Tensors or a single Tensor
             that will be normalized gradients
-        clip_value (float or int): maximum allowed value of the gradients.
+        clip_value (float|int): maximum allowed value of the gradients.
             The gradients are clipped in the range
             :math:`\left[\text{-clip\_value}, \text{clip\_value}\right]`