Christian Coffey cdbd7dba3b Fixed a typo where 'ls' was 'cat' (#30629) ...

* Fixed a typo where 'ls' was 'cat'

'ls' was written as 'cat' in the usage pane. Also made some grammatical changes and changed the location of the directory usage example.

* Update index.md

2019-02-11 17:48:11 -08:00

..

index.md

Fixed a typo where 'ls' was 'cat' (#30629)

2019-02-11 17:48:11 -08:00