Many include statements use forward slashes, while others use backwards
slashes. This is inconsistent formatting. For this reason, I changed the
backward slashes to forward slashes since that is the standard.
## Summary of the Pull Request
![cmdpal-nested-command-polish](https://user-images.githubusercontent.com/18356694/90293616-1f29ca00-de4a-11ea-8942-00d255de929a.gif)
* Add a chevron for nested commands
* Add the text of the parent command when entering a child command
## References
## PR Checklist
* [x] Closes#7265
* [x] I work here
* [n/a] Tests added/passed
* [n/a] Requires documentation to be updated
## Validation Steps Performed
_look at that gif_