docs: Credit-risk-end-to-end example (#4630)

* credit-risk-end-to-end example

Signed-off-by: dandawg <[email protected]>

* incorporated review suggestions

Signed-off-by: dandawg <[email protected]>

* added cleanup notebook link to readme

Signed-off-by: dandawg <[email protected]>

* fixed seeds for timestamps; other minor updates

Signed-off-by: dandawg <[email protected]>

* fixed README.md typo

Signed-off-by: dandawg <[email protected]>

* updated feast data ingest order and simplified

Signed-off-by: dandawg <[email protected]>

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Signed-off-by: dandawg <[email protected]>