[Feature] Rename externalDomain to externalUrl

[dmak]

I have searched the existing feature requests, both open and closed, to make sure this is not a duplicate request.

• Yes

The feature

As to error message

server.externalDomain must be a URL address (Immich Server Error)

the configuration option caption in UI should read

External URL
URL used for external links

and option to be renamed to server.externalUrl.

In this case it is clear the URL should start with either http:// or https://.

Platform

• Server
• Web
• Mobile

Version

v2.7.5