src/palette.vala: Link to new GNOME documentation guidelines
Due to changes in the GNOME documentation guidelines, the link provided by Palette as 'Design Guidelines' lead to a 404 page.
Fix: #9 (closed)
Edited by Zander Brown
Due to changes in the GNOME documentation guidelines, the link provided by Palette as 'Design Guidelines' lead to a 404 page.
Fix: #9 (closed)