Space is missing in error dialog for sharing

[benni347]

The string is missing a space between the , and the word or. Currently it displays it like this:
sharing,or has while it should be sharing, or has.

supersonic/ui/controller/controller.go

Lines 696 to 699 in 7fcbfdd

	c.showError(
	"Failed to share content. This commonly occurs when the server does not support sharing," +
	"or has the feature disabled.\nPlease check the server's settings and try again.",
	)