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/postgresql_server/tasks/datanommer.yml

@@ -15,7 +15,7 @@
     regexp: ^shared_preload_libraries =
     line: "shared_preload_libraries = 'timescaledb'"
   notify:
-  - restart postgresql
+  - Restart postgresql
   tags:
   - datanommer
   - postgresql

roles/postgresql_server/tasks/main.yml

@@ -70,7 +70,7 @@
   sysctl: name=kernel.shmmax value={{ kernel_shmmax }}
   when: kernel_shmmax is defined
   notify:
-  - restart postgresql
+  - Restart postgresql
   tags:
   - postgresql
 
@@ -78,7 +78,7 @@
   ansible.builtin.command: /usr/bin/postgresql-setup initdb
            creates=/var/lib/pgsql/data/postgresql.conf
   notify:
-  - restart postgresql
+  - Restart postgresql
   tags:
   - postgresql
 
@@ -86,7 +86,7 @@
   service: name=postgresql enabled=yes
   ignore_errors: true
   notify:
-  - restart postgresql
+  - Restart postgresql
   tags:
   - service
   - postgresql
@@ -99,7 +99,7 @@
   with_items:
   - pg_hba.conf
   notify:
-  - restart postgresql
+  - Restart postgresql
   tags:
   - config
   - postgresql
@@ -108,7 +108,7 @@
   ansible.builtin.template: dest=/var/lib/pgsql/data/postgresql.conf src=postgresql.conf
   when: ansible_distribution_major_version|int < 8 and ansible_distribution == 'RedHat'
   notify:
-  - restart postgresql
+  - Restart postgresql
   tags:
   - config
   - postgresql
@@ -117,7 +117,7 @@
   ansible.builtin.template: dest=/var/lib/pgsql/data/postgresql.conf src=postgresql.conf-12
   when: (ansible_distribution_major_version|int == 8 and ansible_distribution == 'RedHat') or ansible_distribution != 'RedHat'
   notify:
-  - restart postgresql
+  - Restart postgresql
   tags:
   - config
   - postgresql
@@ -126,7 +126,7 @@
   ansible.builtin.template: dest=/var/lib/pgsql/data/postgresql.conf src=postgresql.conf-15
   when: (ansible_distribution_major_version|int == 9 and ansible_distribution == 'RedHat')
   notify:
-  - restart postgresql
+  - Restart postgresql
   tags:
   - config
   - postgresql