Updated build instructions

Johannes Zarl-Zierl <[email protected]> Tue, 03 Mar 2020 21:50:17 +0100

Newsgroups	gmane.comp.kde.kimdaba
Message-ID	<17595393.CiVXYURBfv@mani>

Hi,

I've updated the build instructions[1], removing kgeomap and replacing it with 
marble. If anyone has time to check if they are still working for them, please 
do so...

Cheers,
  Johannes

[1] https://community.kde.org/KPhotoAlbum/build_instructions