Fixed form indentation
minor #267 Fixed form indentation (Romain Gautier)

This PR was merged into the 2.3.x-dev branch.

Discussion
----------

Fixed form indentation

The code generated looks like:
```
class AbcType extends AbstractType
{
        /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
```

With the fix:
```
class AbcType extends AbstractType
{
    /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
```

Commits
-------

075aa56 Fixed form indentation