fix: all praise the allmighty yamllinter

examples/haproxy/docker-compose.yml

@@ -1,7 +1,8 @@
+---
 version: '3'
 services:
   nginx:
-    image: local/nginx 
+    image: local/nginx
     ports:
       - 40888:80
     volumes:

examples/vars.yml

@@ -1,3 +1,4 @@
+---
 # The bare domain name which represents your Matrix identity.
 # Matrix user ids for your server will be of the form (`@user:<matrix-domain>`).
 #