doc: update README.md for v3.16.1 release

Signed-off-by: Praveen M <m.praveen@ibm.com>
(cherry picked from commit 338f4c6)

Author: iPraveenParihar

README.md

@@ -56,6 +56,7 @@ environments.
 
 | Ceph CSI Version | Container Orchestrator Name | Version Tested     |
 | -----------------| --------------------------- | -------------------|
+| v3.16.1          | Kubernetes                  | v1.32, v1.33, v1.34|
 | v3.16.0          | Kubernetes                  | v1.32, v1.33, v1.34|
 | v3.15.0          | Kubernetes                  | v1.31, v1.32, v1.33|
 
@@ -129,6 +130,7 @@ in the Kubernetes documentation.
 | Ceph CSI Release/Branch | Container image name         | Image Tag |
 | ----------------------- | ---------------------------- | --------- |
 | devel (Branch)          | quay.io/cephcsi/cephcsi      | canary    |
+| v3.16.1 (Release)       | quay.io/cephcsi/cephcsi      | v3.16.1   |
 | v3.16.0 (Release)       | quay.io/cephcsi/cephcsi      | v3.16.0   |
 | v3.15.1 (Release)       | quay.io/cephcsi/cephcsi      | v3.15.1   |
 | v3.15.0 (Release)       | quay.io/cephcsi/cephcsi      | v3.15.0   |

docs/ceph-csi-upgrade.md

@@ -104,15 +104,15 @@ compatibility support and without prior notice.
 For example, upgrading from 3.13 to 3.16 is not recommended.
 
 **Refer to the Breaking Changes Section in the
-[release notes](https://github.com/ceph/ceph-csi/releases/tag/v3.16.0) before
+[release notes](https://github.com/ceph/ceph-csi/releases/tag/v3.16.1) before
 proceeding further.**
 
-git checkout v3.16.0 tag
+git checkout v3.16.1 tag
 
 ```bash
 git clone https://github.com/ceph/ceph-csi.git
 cd ./ceph-csi
-git checkout v3.16.0
+git checkout v3.16.1
 ```
 
 ```console