Updated IMAGE_ARCHITECTURE.md

Signed-off-by: Chirag Aggarwal <thechiragaggarwal@gmail.com>

IMAGE_ARCHITECTURE.md

@@ -1,33 +1,12 @@
 ```
 docker-borgmatic/
-├── base
-│   ├── data
-│   │   └── borgmatic.d
-│   │       ├── config.yml
-│   │       └── crontab.txt
-│   ├── docker-compose.restore.yml     
-│   ├── docker-compose.yml
-│   ├── Dockerfile
-│   ├── entry.sh      
-├── msmtp
-│   ├── data
-│   │   └── borgmatic.d
-│   │       ├── config.yml             # same as in base
-│   │       ├── crontab.txt            # with mailto
-│   │       ├── mailenv.sh
-│   │       └── msmtprc.sh
-│   ├── docker-compose.yml             # image: ghcr.io/borgmatic-collective/borgmatic:latest-msmtp, env: msmtp.env
-│   ├── Dockerfile                     # FROM ghcr.io/borgmatic-collective/borgmatic:${VERSION}
-│   ├── entry.sh                       # starts msmtp in addition
-│   └── README.md                      # describes specifics only
-├── ntfy
-│   ├── data
-│   │   └── borgmatic.d
-│   │       ├── config.yml             # same as in base
-│   │       └── crontab.txt            # same as in base
-│   ├── docker-compose.yml             # image: ghcr.io/borgmatic-collective/borgmatic:latest-ntfy
-│   ├── Dockerfile                     # FROM ghcr.io/borgmatic-collective/borgmatic:${VERSION}
-│   ├── entry.sh                       # same as in base
-│   └── README.md                      # describes specifics only
+├── data
+│   └── borgmatic.d
+│       ├── config.yml
+│       └── crontab.txt
+├── docker-compose.restore.yml     
+├── docker-compose.yml
+├── Dockerfile
+├── entry.sh
 └── README.md     
 ```