Describe the issue:
In 3.10 and 3.11, etcd static pod runs with root user and etcd user no longer in use.
There are 6 instances of `chown -R etcd:etcd` command in the doc, this command was needed in 3.9 and older.
Suggestions for improvement:
Remove chown -R etcd:etcd commands
I've made the changes that I think will fix this. Can you take a look?