Docs: `ActionForm` examples for complex arguments #1207

Job	Run time
get-leptos-changed / Detect Source Change	10s
CI (integrations/axum) / Run ci (nightly)	20m 39s
CI (integrations/utils) / Run ci (nightly)	11m 52s
CI (integrations/actix) / Run ci (nightly)	21m 43s
CI (integrations/viz) / Run ci (nightly)	17m 30s
CI (leptos) / Run ci (nightly)	46m 23s
CI (leptos_config) / Run ci (nightly)	11m 11s
CI (leptos_dom) / Run ci (nightly)	18m 37s
CI (leptos_hot_reload) / Run ci (nightly)	15m 8s
CI (leptos_macro) / Run ci (nightly)	30m 29s
CI (leptos_reactive) / Run ci (nightly)	26m 20s
CI (leptos_server) / Run ci (nightly)	18m 28s
CI (meta) / Run ci (nightly)	19m 36s
CI (router) / Run ci (nightly)	18m 57s
CI (server_fn_macro) / Run ci (nightly)	11m 2s
CI (server_fn) / Run ci (nightly)	11m 48s
CI (server_fn/server_fn_macro_default) / Run ci (nightly)	11m 15s
	5h 11m 8s

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