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/letsencrypt/tasks/main.yml

@@ -67,7 +67,7 @@
     group=root
     mode=0644
   notify:
-  - reload proxyhttpd
+  - Reload proxyhttpd
   tags:
   - letsencrypt
 
@@ -79,7 +79,7 @@
     group=root
     mode=0644
   notify:
-  - reload proxyhttpd
+  - Reload proxyhttpd
   tags:
   - letsencrypt
 
@@ -91,7 +91,7 @@
     group=root
     mode=0600
   notify:
-  - reload proxyhttpd
+  - Reload proxyhttpd
   tags:
   - letsencrypt
 
@@ -103,7 +103,7 @@
     group=root
     mode=0644
   notify:
-  - reload proxyhttpd
+  - Reload proxyhttpd
   tags:
   - letsencrypt
   delegate_to: "{{ certbot_addhost }}"
@@ -118,7 +118,7 @@
     group=root
     mode=0644
   notify:
-  - reload proxyhttpd
+  - Reload proxyhttpd
   tags:
   - letsencrypt
   delegate_to: "{{ certbot_addhost }}"
@@ -133,7 +133,7 @@
     group=root
     mode=0600
   notify:
-  - reload proxyhttpd
+  - Reload proxyhttpd
   tags:
   - letsencrypt
   delegate_to: "{{ certbot_addhost }}"
@@ -148,7 +148,7 @@
     group=root
     mode=0644
   notify:
-  - restart stunnel
+  - Restart stunnel
   tags:
   - letsencrypt
   delegate_to: "{{ certbot_bundlehost }}"