Update documentation for Normal, Uniform, One and Zero initializers. (#6016)
Update documentation for Normal, Uniform, One and Zero initializers. (#6016)

* Update documentation for Uniform, One and Zero initializers.

* Minor doc fix.

* Update documentation for Normal initializer.

* Minor doc fix.

Guneet-Dhillon/mxnet,Guneet-Dhillon/mxnet,Guneet-Dhillon/mxnet,Guneet-Dhillon/mxnet,Guneet-Dhillon/mxnet,Guneet-Dhillon/mxnet,Guneet-Dhillon/mxnet,Guneet-Dhillon/mxnet,Guneet-Dhillon/mxnet