fix(lighthouse): docker-compose indent

docker-compose.yml

@@ -1,5 +1,5 @@
 services:
-portfolio:
+  portfolio:
     build:
       context: .
       args:
@@ -11,7 +11,7 @@ portfolio:
     networks:
       - reverse-proxy
 
-lighthouse-audit:
+  lighthouse-audit:
     profiles:
       - audit
     image: zenika/alpine-chrome:${ZENIKA_VERSION}
@@ -30,5 +30,5 @@ volumes:
   audit_reports:
 
 networks:
-reverse-proxy:
+  reverse-proxy:
     external: true