MINOR: Mention deprecation of authorizer flags in security documentation (#12668)
MINOR: Mention deprecation of authorizer flags in security documentation (#12668)

The following options are deprecated in kafka-acls.sh: `--authorizer`, `--authorizer-properties`, and `--zk-tls-config-file`. This patch updates the security documentation to mention the deprecation and changes examples to use `--bootstrap-server` when possible.

Reviewers: Luke Chen <a747209bc9e65a9d7dd7589245c91b7bed721b13@gmail.com>
guozhangwang/kafka,apache/kafka,apache/kafka,apache/kafka,guozhangwang/kafka,apache/kafka,guozhangwang/kafka,guozhangwang/kafka