Update some descriptions, rearrange order of tasks

roles/pulseaudio/tasks/main.yml

@@ -1,6 +1,6 @@
 ---
 
-- name: install pulseaudio
+- name: apt | install pulseaudio and pavucontrol
   apt:
     name: '{{ item }}'
     state: present
@@ -9,7 +9,7 @@
     - pulseaudio
     - pavucontrol
 
-- name: create /etc/asound.conf
+- name: create /etc/asound.conf with pulseaudio as default device
   template:
     src: templates/alsa/asound.conf.j2
     dest: /etc/asound.conf