docs(intall): Fix a couple grammar errors

Corrects step numbers and improves wording.

Author: jdgarvey

docs/1-install-and-setup.md

@@ -139,15 +139,15 @@ Open `/src/app/app.component.html`:
 </ul>
 ```
 
-### 6. Run your app
+### 7. Run your app
 
 ```bash
 ng serve
 ```
 
 Run the serve command and go to `localhost:4200` in your browser.
 
-And that's it! If it totally borke, file an issue and let us know.
+And that's it! If it's totally *borked*, file an issue and let us know.
 
 ###[Next Step: Retrieving data as objects](2-retrieving-data-as-objects.md)