Avoiding errors on `jekyll serve`
```
# jekyll serve -H 0.0.0.0
Configuration file: /jekyll-offline-docs/site/_config.yml
Configuration file: /jekyll-offline-docs/site/_config.yml
Source: /jekyll-offline-docs/site
Destination: /jekyll-offline-docs/site/_site
Incremental build: disabled. Enable with --incremental
Generating...
Conversion error: Jekyll::Converters::Scss encountered an error while converting 'css/screen.scss':
Invalid US-ASCII character "\xE2" on line 30
jekyll 3.3.0 | Error: Invalid US-ASCII character "\xE2" on line 30
```
And line 97 when 30 is adjusted...