docs: update docs

docs/how-tos/backup-to-s3.md

@@ -123,8 +123,6 @@ spec:
               # Please use secret!
               - name: DB_PASSWORD
                 value: ""
-              - name: ACCESS_KEY
-                value: ""
               - name: AWS_S3_ENDPOINT
                 value: "https://s3.amazonaws.com"
               - name: AWS_S3_BUCKET_NAME

docs/index.md

@@ -45,10 +45,6 @@ To run a one time backup, bind your local volume to `/backup` in the container a
 
 Alternatively, pass a `--env-file` in order to use a full config as described below.
 
-
-
-Add a `backup` service to your compose setup and mount the volumes you would like to see backed up:
-
 ### Simple backup in docker compose file
 
 ```yaml