Spelling correction

##### Issue Type:

Docs Pull Request

##### Ansible Version:

ansible 1.5 (docfix 0dbd5d3e18) last updated 2014/02/14 10:47:27 (GMT -500)

##### Environment:

N/A

##### Summary:

Spelling correction, replacing FWQN (**F**ully **W**orking **Q**uincy **N**ovel) with FQDN, which makes a lot more sense, given the purpose of this module.  Thanks, guys.

##### Steps To Reproduce:

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##### Expected Results:

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##### Actual Results:

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