symfony 5.2 unrecognized option 'http_version' under framework.http_client

Looks like the docs might need to be updated a bit. Under a 5.2 app:

bin/console config:dump-reference framework http_client

# HTTP Client configuration
http_client:
    enabled:              true

    # The maximum number of connections to a single host.
    max_host_connections: ~
    default_options:

        # Associative array: header => value(s).
        headers:

            # Prototype
            name:                 ~

        # The maximum number of redirects to follow.
        max_redirects:        ~

        # The default HTTP version, typically 1.1 or 2.0, leave to null for the best version.
        http_version:         ~

So http_version goes under default_options

# config/packages/framework.yaml
framework:
    http_client:
        default_options:
            http_version: '2.0'

bin/console debug:config framework http_client

Current configuration for "framework.http_client"
=================================================

default_options:
    http_version: '2.0'
    headers: {  }
    resolve: {  }
    retry_failed:
        enabled: false
        retry_strategy: null
        http_codes: {  }
        max_retries: 3
        delay: 1000
        multiplier: 2
        max_delay: 0
        jitter: 0.1
enabled: true
scoped_clients: {  }