Update README.md

Author: andyzhangx

README.md

@@ -63,7 +63,7 @@ This option does not depend on cloud provider config file, supports cross subscr
  - [NFSv3](./deploy/example/nfs)
  - [fsGroupPolicy](./deploy/example/fsgroup)
  - [Volume cloning](./deploy/example/cloning)
- - [Workload identity](./docs/workload-identity.md)
+ - [Workload identity](./docs/workload-identity-static-pv-mount.md)
 
 ### Troubleshooting
  - [CSI driver troubleshooting guide](./docs/csi-debug.md)