fix node exporter with firewalld enabled

Fixes #223 (closed)

ansible/roles/install_node_exporter/tasks/main.yaml

@@ -59,10 +59,10 @@
     state: restarted
     enabled: true
 
-- name: collect facts about system services
+- name: Collect facts about system services
   ansible.builtin.service_facts:
 
-- name: Configure firewalld to allow ssh and sshpiper traffic
+- name: Configure firewalld to allow prometheus
   ansible.posix.firewalld:
     port: "{{ node_exporter_port }}/tcp"
     zone: public