Fixed some typos

                   
|Q            |A  |
|---          |---|
|Bug Fix?     |n  |
|New Feature? |n  |
|BC Breaks?   |n  |
|Deprecations?|n  |
|Tests Pass?  |n  |
|Fixed Tickets| #9  |
|License      |MIT|
|Doc PR       |   |
                   


 Sent using [Gush](https://github.com/gushphp/gush)
@wjzijderveld when you are in namespaced code, they do. The phpdoc standard defines that types in the phpdoc are resolved relatively to the current namespace (like when you do ``new Broadway\CommandHandling\CommandHandler()`` in code). This means that without a leading backslash, it will be resolved to ``Broadway\CommandHandling\Testing\Broadway\CommandHandling\CommandHandler``