Remove chmod instruction from quickstart

Author: manisandro

src/QuickStart.md

@@ -19,7 +19,6 @@ git clone https://github.com/qwc-services/qwc-docker.git
 cd qwc-docker
 cp docker-compose-example.yml docker-compose.yml
 cp api-gateway/nginx-example.conf api-gateway/nginx.conf
-chmod o-rwx pg_service*.conf
 ```
 - Set the password for the `postgres` superuser in `docker-compose.yml`:
 ```yml