Remove deprecated 'version' tag in docker (#198)

Author: mtthidoteu

docs/installation/docker.md

@@ -34,8 +34,6 @@ This guide expects some previous docker knowledge and an already working environ
 - Set the `user: 1000:1000` to correct ID of your user.
 
 ```yaml title="docker-compose.yml"
-version: "3.7"
-
 services:
   autobrr:
     container_name: autobrr
@@ -60,8 +58,6 @@ services:
 We support the following environment variables to override the config file:
 
 ```yaml title="docker-compose.yml"
-version: "3.7"
-
 services:
   autobrr:
     environment: