docs: add docs for cephfs

- specifically related to managing csi volumes for kubernetes

doc/ceph/README.md

@@ -33,10 +33,11 @@ Always refer back to the official documentation at https://docs.ceph.com/en/late
 
 This will:
 
-* Create erasure code profiles. The K and M values are equivalent to the number of data disks (K) and parity disks (M) in RAID5, RAID6, etc.
+    Create erasure code profiles. The K and M values are equivalent to the number of data disks (K) and parity disks (M) in RAID5, RAID6, etc.
-* Create data pools using the erasure-code-profile, set some required options
+    Create data pools using the erasure-code-profile, set some required options
-* Add the pool to the fs `cephfs`
+    Add the pool to the fs `cephfs`
-* Create a subvolumegroup using the new data pool
+    Create a subvolumegroup using the new data pool
+
 
 
     sudo ceph osd erasure-code-profile set ec_6_2 k=6 m=2