Update RFC-00xx-special-functions.md

Author: 0x00b1

RFC-00xx-special-functions.md

@@ -1444,7 +1444,7 @@ $$(n \in \mathbb{Z}) \vee (n = 0) \vee (z \neq  0) \vee (\operatorname{Re}(z) >
 
 ##### Parameters
 
-**n** ([Tensor](https://pytorch.org/docs/stable/tensors.html#torch.Tensor) *or Number*) – order. If $z$ is a number, $n$ must be a tensor.
+**n** ([Tensor](https://pytorch.org/docs/stable/tensors.html#torch.Tensor) *or Number*) – order. If $n$ is a number, $z$ must be a tensor.
 
 **z** ([Tensor](https://pytorch.org/docs/stable/tensors.html#torch.Tensor) *or Number*) – input. If $z$ is a number, $n$ must be a tensor.
 
@@ -1521,7 +1521,7 @@ If $z \in \mathbb{C}$, $Y_{n}(z)$ is defined for $z \neq 0$.
 
 **n** ([Tensor](https://pytorch.org/docs/stable/tensors.html#torch.Tensor) *or Number*) – order. If $z$ is a number, $n$ must be a tensor.
 
-**z** ([Tensor](https://pytorch.org/docs/stable/tensors.html#torch.Tensor) *or Number*) – input. If $z$ is a number, $n$ must be a tensor.
+**z** ([Tensor](https://pytorch.org/docs/stable/tensors.html#torch.Tensor) *or Number*) – input. If $n$ is a number, $z$ must be a tensor.
 
 ##### Keyword Arguments