bug fix not replace '\r\n' string

It seems I found a bug.
Within the configuration file does not properly parse the value is not output correctly.

My configuration file is as follows:
```yaml
app:
port: 3000
pub_dir: "/public"
cookie_secret: "your secret key salt goes here"
```

When I read a config file, but default.yaml could not get proper value.
I checked '\ r \ n' problem occurs because the string is not replaced properly, it seems.

This simple modification to one source which I ask for confirmation.

thank.