Update project url in user-agent

The project was moved into the Arch Linux group.

snapshotter.sh

@@ -29,7 +29,7 @@ function _download() {
     include_directories+=",task"
   fi
   local user_agent
-  user_agent="albs ($(git rev-parse --short HEAD); https://gitlab.archlinux.org/klausenbusk/archlinux-bugs-snapshotter)"
+  user_agent="albs ($(git rev-parse --short HEAD); https://gitlab.archlinux.org/archlinux/archlinux-bugs-snapshotter)"
   wget --recursive \
        --include-directories="${include_directories}" \
        --page-requisites \