docs(k8s): add docs for file system

Author: bene2k1

pages/kubernetes/api-cli/managing-storage.mdx

@@ -1,6 +1,6 @@
 ---
-title: Managing Block Storage volumes with Scaleway CSI
-description: Learn how to manage Block Storage volumes using Scaleway's CSI driver on Kubernetes Kapsule and Kosmos clusters.
+title: Managing Block Storage volumes and File Storage filesystems with Scaleway CSI
+description: Learn how to manage Block Storage volumes and File Storage filesystems using Scaleway's CSI driver on Kubernetes Kapsule and Kosmos clusters.
 tags: block-storage scaleway-csi kubernetes pvc
 dates:
   validation: 2025-07-21
@@ -9,7 +9,7 @@ dates:
 import Requirements from '@macros/iam/requirements.mdx'
 
 
-The [Scaleway Block Storage volume](https://www.scaleway.com/en/block-storage/) Container Storage Interface (CSI) driver is an implementation of the [CSI interface](https://github.com/container-storage-interface/spec/blob/master/spec.md) to provide a way to manage Scaleway block volumes through a container orchestration system, like Kubernetes. It is installed by default on every Kubernetes Kapsule and Kosmos cluster.
+The [Scaleway Block Storage volume](https://www.scaleway.com/en/block-storage/) and File Storage filesystem Container Storage Interface (CSI) driver is an implementation of the [CSI interface](https://github.com/container-storage-interface/spec/blob/master/spec.md) to provide a way to manage Scaleway block volumes through a container orchestration system, like Kubernetes. It is installed by default on every Kubernetes Kapsule and Kosmos cluster.
 
 <Requirements />
 
@@ -49,3 +49,5 @@ To identify your current CSI release version, navigate to the [Cockpit interface
       * `sbs-5k` and `sbs-15k` are pre-configured storage classes designed to meet your IOPS requirements. You can achieve the equivalent of setting `iops:5k` in your custom class.
     </Message>
 * [Encrypting volumes](https://github.com/scaleway/scaleway-csi/tree/release-0.3/examples/kubernetes#encrypting-volumes)
+* [How to use SFS with Kubernetes Kapsule](/kubernetes/how-to/use-sfs-with-kubernetes.mdx)
+* [Using Kubernetes subPath with Scaleway File Storage on Kapsule clusters](/kubernetes/reference-content/using-subpath-with-sfs.mdx)