With local gitlab, author names link to global gitlab.com page

[thesnert]

Hello,
great tool, thank you very much! Just a minor bug I found using gitlight with a local gitlab installation:

The authorUrl in NotificationDescription.svelte is hard-coded to either github.com or gitlab.com and does not adapt to local gitlab repository settings:

gitlight/src/lib/components/dashboard/notifications/NotificationDescription.svelte

Line 23 in a8fb732

$: authorUrl = author && !author.bot ? `https://${from}.com/${author.login}` : '';