Update links for documentation in ecosystem page

[CyprienBosserelle]

In the ecosystem page of GMT documentation (https://www.generic-mapping-tools.org/projects/) link still points to

https://www.generic-mapping-tools.org/GMT.jl/

where it should point to:

https://www.generic-mapping-tools.org/GMTjl_doc/

I've updated my bookmarks but that might surprise new users.

Cheers Cyp

[joa-quim]

True, thanks. I've pushed an update to the site. Not sure how long it will take to be visible.

[CyprienBosserelle]

Sorted now!