ISTWCMS-3598: ensure to sym links are correct

build_gesso.sh

 build_option=${1:-1}
 gesso_version="8.x-3.2"
 git clone "https://github.com/forumone/gesso" "gesso"
+cd ..
 ln -s "uw_wcms_gesso/source" "source"
-cd gesso
+cd uw_wcms_gesso/gesso
 git checkout $gesso_version
 rm -rf "source"
 ln -s "../source"
-
 echo "Removing Gesso files"
 rm gesso.layouts.yml
 rm gesso.info.yml