--single-quotes doesn't work as expected

[Casey Foster]

I tried to use --single-quotes and noticed it made no difference in the output. Dug through the code and it looks like this line doesn't actually do anything because .replace doesn't mutate the original string.

https://github.com/onderceylan/pwa-asset-generator/blob/a444f76b937d17e621bb5bb22b6352ea3d4fa9f2/src/helpers/meta.ts#L180

The line would need to be more like

htmlMeta[metaKey] = metaContent.replaceAll('"', "'");