Lack of description of the range of values for in_channels and out_channels in the mindspore.nn.Dense documentation

[PhyllisJi]

Software Environment:

• MindSpore version (source or binary): binary
• Python version (e.g., Python 3.7.5): 3.9
• OS platform and distribution (e.g., Linux Ubuntu 16.04): Ununtu 20.04
• GCC/Compiler version (if compiled from source):

Describe the current behavior

mindspore.nn.Dense(in_channels=9, out_channels=0)

Error:

ValueError: For 'Dense', the 'out_channels' must be int and must > 0, but got '0' with type 'int'.

Describe the expected behavior

A more detailed description should be given in the documentation

[moyanxinxu]

The output channel can only be an integer greater than 0. 抛出的错误提示很清楚，输出的通道只能是大于0的整数