Removes excess indentation around git config autocrlf line

The suggested git config for autocrlf is rendering with graves in the code box because it is both indented and wrapped with triple graves.
  
        ```bash
        $ git config --global core.autocrlf true
        ```

With the extra indentation removed it now renders correctly.

```
bash$ git config --global core.autocrlf true
```

Thanks for putting this together everyone!