docs/rofl/features/storage: Use named volume

Revert short syntax for volume mounting.

Author: matevz

docs/rofl/features/storage.md

@@ -15,13 +15,12 @@ way they are fetched only the first time a ROFL app is deployed, otherwise
 a cached version is considered.
 
 Additionally, a ROFL developer can also take advantage of the persistent
-storage. Any folder residing inside the `/storage` folder on the host will be
-made persistent.
+storage. All non-external volumes will automatically reside in a persitent
+location on the host.
 
-In the example below, we use the [short syntax for Compose
-volumes][compose-volumes] to make the `.ollama` home folder persistent. This way
-we avoid downloading ollama models each time a machine hosting the ROFL app is
-restarted:
+In the example below, we define a new volume called `my-volume` and make
+`.ollama` in the home folder persistent. This way we avoid downloading ollama
+models each time a machine hosting the ROFL app is restarted:
 
 ```yaml title="compose.yaml"
 services:
@@ -30,8 +29,9 @@ services:
     ports:
       - "11434:11434"
     volumes:
-      - /storage/ollama:/root/.ollama
+      - my-volume:/root/.ollama
     entrypoint: ["/usr/bin/bash", "-c", "/bin/ollama serve & sleep 5; ollama pull deepseek-r1:1.5b; wait"]
-```
 
-[compose-volumes]: https://docs.docker.com/reference/compose-file/services/#short-syntax-5
+volumes:
+  my-volume:
+```