fix paths

update-gluon.sh

@@ -36,10 +36,12 @@ new_gluon_rev=$(git rev-parse HEAD)
 cd ..
 
 git clone --recurse "$site_git_url"
+
+cd site-ffs
 git checkout nightly
-cd site-ffs/gluon
-git checkout $gluon_rev
-cd ..
+
+git -C gluon checkout $gluon_rev
+
 git add gluon
 git commit -m "automatic update to gluon $fork_newest_minor_tag"
 git push