Migration page from "old" notifiers to "new" notifiers #4338

Job	Run time
build (stable, examples/counter)	1m 23s
build (stable, examples/marvel)	1m 6s
build (stable, examples/pub)	1m 10s
build (stable, examples/random_number)	1m 5s
build (stable, examples/stackoverflow)	1m 5s
build (stable, examples/todos)	1m 21s
build (stable, packages/riverpod)	2m 34s
build (stable, packages/riverpod/example)	1m 28s
build (stable, packages/flutter_riverpod)	1m 30s
build (stable, packages/flutter_riverpod/example)	1m 21s
build (stable, packages/hooks_riverpod)	1m 10s
build (stable, packages/hooks_riverpod/example)	1m 6s
build (stable, packages/riverpod_annotation)	52s
build (stable, packages/riverpod_generator)	1m 30s
build (stable, packages/riverpod_generator/integration/build_yaml)	1m 39s
build (stable, website)	1m 6s
build (master, examples/counter)	2m 0s
build (master, examples/marvel)	2m 1s
build (master, examples/pub)	1m 30s
build (master, examples/random_number)	1m 49s
build (master, examples/stackoverflow)	1m 51s
build (master, examples/todos)	1m 51s
build (master, packages/riverpod)	3m 36s
build (master, packages/riverpod/example)	1m 37s
build (master, packages/flutter_riverpod)	1m 48s
build (master, packages/flutter_riverpod/example)	1m 42s
build (master, packages/hooks_riverpod)	1m 41s
build (master, packages/hooks_riverpod/example)	1m 28s
build (master, packages/riverpod_annotation)	1m 22s
build (master, packages/riverpod_generator)	2m 37s
build (master, packages/riverpod_generator/integration/build_yaml)	2m 4s
build (master, website)	2m 10s
	52m 33s

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