- Updated persistence documentation to make it clear that save and save! won't update a record if validation fails. - Also fixed `update` method's documention to be uniform about this statement. Fixes #20821
- Updated persistence documentation to make it clear that save and save! won't update a record if validation fails.
- Also fixed `update` method's documention to be uniform about this statement.
Fixes #20821

[ci skip]

[Vipul A M & pseidemann ]

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