fix yamllint findings

example/docker-compose/docker-compose.yaml

@@ -1,4 +1,3 @@
----
 version: "3.6"
 
 networks:
@@ -22,7 +21,7 @@ services:
     volumes:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
-      - ./nginx/:/etc/nginx:ro # See config file below
+      - ./nginx/:/etc/nginx:ro  # See config file below
 
   bumper:
     image: bmartin5692/bumper
@@ -34,7 +33,7 @@ services:
       PUID: 1000
       PGID: 1000
       TZ: Europe/Rome
-      BUMPER_ANNOUNCE_IP: XXX # Insert your IP
+      BUMPER_ANNOUNCE_IP: XXX  # Insert your IP
       BUMPER_LISTEN: 0.0.0.0
       # BUMPER_DEBUG: "true"
       LOG_TO_STDOUT: "true"