Actually apply the pre-commit fixers to the codebase.

This can be redone manually with
`pre-commit run --all`

While the pre-commit hook could be merged to run locally,
it is much cleaner to align all the files to best-practice
syntax in a single commit. It is also required for server-side
validation.

docker-compose.yml

@@ -6,7 +6,7 @@ services:
     command:
       - serve
     environment:
-      - TZ=UTC    # optional: Change to your desired timezone
+      - TZ=UTC # optional: Change to your desired timezone
     user: UID:GID # optional: Set custom user/group or uid/gid
     volumes:
       - /var/cache/ntfy:/var/cache/ntfy
@@ -14,4 +14,3 @@ services:
     ports:
       - 80:80
     restart: unless-stopped
-