Issue #21 - multiline \value tag generates RECOMMENDED

Thanks, commit 14d5f518bf32cc44bf1358cc0f80a6c95186aa3d solves problem 2) in issue #21.

However one 1) is still open. Codes in .Rd file:

a) This passes OK:
``` 
\value{ The \code{\link{PlotSetArray}} object. }
```


b) This as well:
```
\value{ The 
\code{\link{PlotSetArray}} object. 
}
```

c) This not (returns RECOMMENDED):
```
\value{
The \code{\link{PlotSetArray}} object. 
}
```

All 3 generates exactly the same output in man pages.
This pull request fixes the problem with code chunk c).