api_key is optional, but marked as required

### Type of issue

Typo

### Description

api_key is optional, but marked as required
note the contradiction in the 3rd row of the table

Name | Description
-- | --
nameRequired | strName of the connection.
endpointRequired | strThe serverless endpoint.
api_keyRequired | Optional[str]The API key needed to connect to the endpoint.
tagsRequired | dictTag dictionary. Tags can be added, removed, and updated.

### Page URL

https://learn.microsoft.com/en-us/python/api/azure-ai-ml/azure.ai.ml.entities.serverlessconnection?view=azure-python-preview

### Content source URL

https://github.com/MicrosoftDocs/azure-docs-sdk-python/blob/main/preview/docs-ref-autogen/azure-ai-ml/azure.ai.ml.entities.ServerlessConnection.yml

### Document Version Independent Id

34a38114-4a7e-bdd8-9991-82a9b1cbf821

### Article author

@VSC-Service-Account

### Metadata

* ID: 6a2c24d3-fb5c-32d9-ae55-8c0352f16795