Fix yaml, and format README

README.md

@@ -1,27 +1,29 @@
 # iventoy
 
-A docker image running iventoy. 
+A docker image running iventoy.
 
 A github actions workflow runs daily to check if their is a new release.
 
-https://hub.docker.com/r/ziggyds/iventoy
+<https://hub.docker.com/r/ziggyds/iventoy>
 
 ## Docker Compose
-````
+
+```yaml
 ---
 version: '3.9'
 services:
   iventoy:
-   volumes:
-     - <mount>:<folder>
+    volumes:
+      - <mount>:<folder>
     ports:
-      - 26000:26000 
-      - 16000:16000 
+      - 26000:26000
+      - 16000:16000
       - 10809:10809
       - 67:67
       - 69:69
     image: ziggyds/iventoy:latest
     restart: unless-stopped
-````
+```
+
 Not necessary to expose all the listed ports.
-https://www.iventoy.com/en/doc_portnum.html
+<https://www.iventoy.com/en/doc_portnum.html>