Fix reboot handler calls (#239)

Signed-off-by: Derek Nola <derek.nola@suse.com>

roles/raspberrypi/tasks/prereq/Debian.yml

@@ -10,7 +10,7 @@
     regexp: '^((?!.*\bcgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory\b).*)$'
     line: '\1 cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory'
     backrefs: true
-  notify: reboot
+  notify: Reboot Pi
 
 - name: Install iptables
   ansible.builtin.apt: