Fixes for #2350, random bind shellcode

  * Moved shortlink to a reference.
  * Reformat e-mail address.
  * Fixed whitespace
  * Use multiline quote per most other module descriptions

Still need to resplat the modules, but it's no big thang to do that
after landing. Also, References do not seem to appear for post modules
in the normal msfconsole. This is a bug in the UI, not for these modules
-- many payloads would benefit from being explicit on their references,
so may as well start with these.
Merge pull request #1 from todb-r7/pr2350-fix-random-bind-port-shellcode

Fixes for #2350, random bind shellcode