docs: update debug description (#164)

natenorberg · Kent C. Dodds · commit e18519abab84 · 2018-08-23T10:23:30.000-06:00
diff --git a/README.md b/README.md
@@ -242,7 +242,7 @@ renders it's HTML directly in the body.
 
 #### `debug`
 
-This method is a shortcut for `console.log(prettyDOM(container))`.
+This method is a shortcut for `console.log(prettyDOM(baseElement))`.
 
 ```javascript
 import {render} from 'react-testing-library'
