Fix kmod::alias example

[silug]

The entry in README.md for kmod::alias has the following example:

  kmod::alias { 'bond0':
    aliasname => 'bonding',
  }

It should read as follows:

  kmod::alias { 'bond0':
    source => 'bonding',
  }

Fixes #84

[silug]

I missed this in #83.

[kenyon]

Looks like the example in https://github.com/voxpupuli/puppet-kmod/blob/master/manifests/alias.pp also needs to be fixed, can you add that to this PR?

[silug]

Looks like the example in https://github.com/voxpupuli/puppet-kmod/blob/master/manifests/alias.pp also needs to be fixed, can you add that to this PR?

Done. Good catch. 🙂