Use first uppercase letter for all handlers

This will unify all the handlers to use first uppercase letter for
ansible-lint to stop complaining.

I went through all `notify:` occurrences and fixed them by running
```
set TEXT "text_to_replace"; set REPLACEMENT "replacement_text"; git grep
-rlz "$TEXT" . | xargs -0 sed -i "s/$TEXT/$REPLACEMENT/g"
```

Then I went through all the changes and removed the ones that wasn't
expected to be changed.

Fixes https://pagure.io/fedora-infrastructure/issue/12391

Signed-off-by: Michal Konecny <mkonecny@redhat.com>

roles/mailman3/tasks/main.yml

@@ -261,7 +261,7 @@
   tags:
     - mailman
     - hyperkitty
-  notify: handle static files
+  notify: Handle static files
 
 - name: Create the hyperkitty templates override dirs
   ansible.builtin.file:
@@ -588,7 +588,7 @@
     - webui-qcluster
     - webui-warm-up-cache
   notify:
-    - systemctl daemon-reload
+    - Systemctl daemon-reload
   tags:
     - config
     - mailman
@@ -600,7 +600,7 @@
     dest: "/etc/systemd/system/hyperkitty.target"
     mode: "0644"
   notify:
-    - systemctl daemon-reload
+    - Systemctl daemon-reload
   tags:
     - config
     - mailman
@@ -620,7 +620,7 @@
     - hyperkitty-weekly
     - hyperkitty-yearly
   notify:
-    - systemctl daemon-reload
+    - Systemctl daemon-reload
   tags:
     - config
     - mailman
@@ -640,7 +640,7 @@
     - hyperkitty-weekly
     - hyperkitty-yearly
   notify:
-    - systemctl daemon-reload
+    - Systemctl daemon-reload
   tags:
     - config
     - mailman
@@ -655,7 +655,7 @@
   with_items:
     - mailmanweb.conf
   notify:
-    - reload apache
+    - Reload apache
   tags:
     - config
     - httpd