added documentation about new annotation

Author: pthak94

docs/guide/service/annotations.md

@@ -23,6 +23,7 @@
 | [service.beta.kubernetes.io/aws-load-balancer-internal](#lb-internal)                            | boolean                 | false                     | deprecated, in favor of [aws-load-balancer-scheme](#lb-scheme)                                                                                                                                                                      |
 | [service.beta.kubernetes.io/aws-load-balancer-scheme](#lb-scheme)                                | string                  | internal                  |                                                                                                                                                                                                                                     |
 | [service.beta.kubernetes.io/aws-load-balancer-proxy-protocol](#proxy-protocol-v2)                | string                  |                           | Set to `"*"` to enable                                                                                                                                                                                                              |
+| [service.beta.kubernetes.io/aws-load-balancer-proxy-protocol-per-target-group](#proxy-protocol-v2)                | string                  |                           | If specified,configures proxy protocol per targrt group based on ServicePort. For example `"80, true, 443, true, 22, false"` will disable proxy protocol for port 22 only. This annotation is overriden by `"service.beta.kubernetes.io/aws-load-balancer-proxy-protocol"`                                                                                                                                                                                                            |
 | [service.beta.kubernetes.io/aws-load-balancer-ip-address-type](#ip-address-type)                 | string                  | ipv4                      | ipv4 \| dualstack                                                                                                                                                                                                                   |
 | [service.beta.kubernetes.io/aws-load-balancer-access-log-enabled](#deprecated-attributes)        | boolean                 | false                     | deprecated, in favor of [aws-load-balancer-attributes](#load-balancer-attributes)                                                                                                                                                   |
 | [service.beta.kubernetes.io/aws-load-balancer-access-log-s3-bucket-name](#deprecated-attributes) | string                  |                           | deprecated, in favor of [aws-load-balancer-attributes](#load-balancer-attributes)                                                                                                                                                   |