Fix markdownlint failures under ./roles/ (#7089)

This fixes markdownlint failures under roles/

roles/kubernetes-apps/external_provisioner/cephfs_provisioner/README.md

@@ -23,11 +23,11 @@ make push
 Test instruction
 ----------------
 
--   Start Kubernetes local cluster
+- Start Kubernetes local cluster
 
-See <a href="https://kubernetes.io/" class="uri" class="uri">https://kubernetes.io/</a>.
+See [Kubernetes](https://kubernetes.io/)
 
--   Create a Ceph admin secret
+- Create a Ceph admin secret
 
 ``` bash
 ceph auth get client.admin 2>&1 |grep "key = " |awk '{print  $3'} |xargs echo -n > /tmp/secret
@@ -35,7 +35,7 @@ kubectl create ns cephfs
 kubectl create secret generic ceph-secret-admin --from-file=/tmp/secret --namespace=cephfs
 ```
 
--   Start CephFS provisioner
+- Start CephFS provisioner
 
 The following example uses `cephfs-provisioner-1` as the identity for the instance and assumes kubeconfig is at `/root/.kube`. The identity should remain the same if the provisioner restarts. If there are multiple provisioners, each should have a different identity.
 
@@ -45,21 +45,21 @@ docker run -ti -v /root/.kube:/kube -v /var/run/kubernetes:/var/run/kubernetes -
 
 Alternatively, deploy it in kubernetes, see [deployment](deploy/README.md).
 
--   Create a CephFS Storage Class
+- Create a CephFS Storage Class
 
-Replace Ceph monitor's IP in <a href="example/class.yaml" class="uri" class="uri">example/class.yaml</a> with your own and create storage class:
+Replace Ceph monitor's IP in [example class](example/class.yaml) with your own and create storage class:
 
 ``` bash
 kubectl create -f example/class.yaml
 ```
 
--   Create a claim
+- Create a claim
 
 ``` bash
 kubectl create -f example/claim.yaml
 ```
 
--   Create a Pod using the claim
+- Create a Pod using the claim
 
 ``` bash
 kubectl create -f example/test-pod.yaml
@@ -68,9 +68,9 @@ kubectl create -f example/test-pod.yaml
 Known limitations
 -----------------
 
--   Kernel CephFS doesn't work with SELinux, setting SELinux label in Pod's securityContext will not work.
--   Kernel CephFS doesn't support quota or capacity, capacity requested by PVC is not enforced or validated.
--   Currently each Ceph user created by the provisioner has `allow r` MDS cap to permit CephFS mount.
+- Kernel CephFS doesn't work with SELinux, setting SELinux label in Pod's securityContext will not work.
+- Kernel CephFS doesn't support quota or capacity, capacity requested by PVC is not enforced or validated.
+- Currently each Ceph user created by the provisioner has `allow r` MDS cap to permit CephFS mount.
 
 Acknowledgement
 ---------------