Fix for rubocop

```
lib/pod/command/browse.rb:10:25: C: Space inside square brackets detected.
      self.arguments = [ CLAide::Argument.new(%w(NAME), true) ]
                        ^
lib/pod/command/browse.rb:10:62: C: Space inside square brackets detected.
      self.arguments = [ CLAide::Argument.new(%w(NAME), true) ]
                                                             ^
```