netlink: specs: fix schema of rt_addr

The spec is mis-formatted, schema validation says:

  Failed validating 'type' in schema['properties']['operations']['properties']['list']['items']['properties']['dump']['properties']['request']['properties']['value']:
    {'minimum': 0, 'type': 'integer'}

  On instance['operations']['list'][3]['dump']['request']['value']:
    '58 - ifa-family'

The ifa-family clearly wants to be part of an attribute list.

Fixes: dfb0f7d ("doc/netlink: Add spec for rt addr messages")
Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: Yuyang Huang <[email protected]>
Signed-off-by: NipaLocal <nipa@local>

Author: kuba-moo

Documentation/netlink/specs/rt_addr.yaml

@@ -187,6 +187,7 @@ operations:
       dump:
         request:
           value: 58
+          attributes:
             - ifa-family
         reply:
           value: 58