use correct icon for terminal quick fix link types

[meganrogge]

We reverted this change since it's not an important fix, but can cherry pick for December

f2e4087

[Tyriar]

Also we want go-to-file:

[meganrogge]

there's an external link icon - perhaps we should use that instead of link for urls?

[Tyriar]

The name certainly seems like it, let's do that but confirm in other usages