Fix typo (#1224)
Fix typo (#1224)

Summary:
Issue fixed: #

- [x] All tests pass. Demo project builds and runs.
- [x] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md)
Pull Request resolved: https://github.com/Instagram/IGListKit/pull/1224

Differential Revision: D9003381

Pulled By: rnystrom

fbshipit-source-id: d0369d82b3f20bb15b94515d34d9667c34790fb2

Instagram/IGListKit,Instagram/IGListKit,Instagram/IGListKit,Instagram/IGListKit,Instagram/IGListKit