docs: specify form for component generics #1373

Job	Run time
get-leptos-changed / Detect Source Change	10s
CI (integrations/actix) / Run ci (nightly)	13m 44s
CI (integrations/axum) / Run ci (nightly)	13m 9s
CI (integrations/utils) / Run ci (nightly)	13m 40s
CI (integrations/viz) / Run ci (nightly)	13m 4s
CI (leptos) / Run ci (nightly)	1h 31m 25s
CI (leptos_config) / Run ci (nightly)	11m 55s
CI (leptos_dom) / Run ci (nightly)	19m 10s
CI (leptos_macro) / Run ci (nightly)	18m 28s
CI (leptos_hot_reload) / Run ci (nightly)	11m 54s
CI (leptos_reactive) / Run ci (nightly)	43m 20s
CI (leptos_server) / Run ci (nightly)	19m 15s
CI (meta) / Run ci (nightly)	12m 56s
CI (server_fn) / Run ci (nightly)	13m 1s
CI (server_fn_macro) / Run ci (nightly)	12m 3s
CI (router) / Run ci (nightly)	14m 19s
CI (server_fn/server_fn_macro_default) / Run ci (nightly)	12m 8s
	5h 33m 41s

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