docs(parser): APIGatewayProxyEvent to APIGatewayProxyEventModel

[darnley]

Description of changes:

Fix the built-in model that is responsible for parsing events of API Gateway Proxy v1 to Lambda. Someone write that the built-in model is aws_lambda_powertools.utilities.data_classes.APIGatewayProxyEvent, but, in fact, the right model for parsing using event_parser is aws_lambda_powertools.utilities.parser.models.APIGatewayProxyEventModel.

When we try to use the wrong one (APIGatewayProxyEvent) in event_parser, it results in an error since it does not inherits BaseModel from pydantic.

Checklist

• Meet tenets criteria
• Update tests
• Update docs
• PR title follows conventional commit semantics

Breaking change checklist

RFC issue #:

• Migration process documented
• Implement warnings (if it can live side by side)

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View rendered docs/utilities/parser.md

[boring-cyborg]

Thanks a lot for your first contribution! Please check out our contributing guidelines and don't hesitate to ask whatever you need.

[heitorlessa]

hey @darnley thank you for helping improve the documentation; it's definitely an oversight we will prevent after moving all snippets to separate files that can be linted.

[boring-cyborg]

Awesome work, congrats on your first merged pull request and thank you for helping improve everyone's experience!