[anodized] docs: update intro #765

Job	Run time
Check formatting	15s
Lint test-util	16s
Lint and test anodized-logic	28s
Lint and test anodized-core	25s
Lint and smoke-test fuzz targets	1m 39s
Lint and test anodized with cfg `--config 'build.rustflags=["--cfg","anodized_print"]'`	37s
Lint and test anodized-fmt	35s
Lint and test anodized with cfg `--config 'build.rustflags=["--cfg","anodized_panic"]'`	37s
Lint and test anodized with cfg `--config 'build.rustflags=["--cfg","anodized_discard_specs"]'`	39s
Lint and test anodized with cfg ``	37s
	6m 8s

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