fix some comment

Signed-off-by: Sharpler <sharplermc@gmail.com>
Fix Vector.ToString()

Signed-off-by: Sharpler <sharplermc@gmail.com>
Fix Vector.ToString()

Signed-off-by: Sharpler <sharplermc@gmail.com>
Upgrade test method NeuronLayer.Clone()

Signed-off-by: Sharpler <sharplermc@gmail.com>