Mismatched problem content  TIP102, Unit 06, Session 01, Standard

[Wiki Link](https://github.com/codepath/compsci_guides/wiki/TIP102-Unit-6-Session-1-Standard)

The content for problems 5 and 6 are switched. 

In [Looped](https://github.com/codepath/compsci_guides/wiki/Looped), the content should be the content of [Volume Control](https://github.com/codepath/compsci_guides/wiki/Volume-Control), and vice-versa.