Updated "feed" default rules on option market data endpoints

Market Data API

The feed parameter documentation on the option market data endpoints now describes how the default source feed is chosen:

• opra when the request uses broker partner API credentials and the partner has an OPRA subscription.
• opra when the account has a real-time subscription and has signed the OPRA agreement.
• indicative otherwise.

Request and response shapes are unchanged.

Affected Endpoints

• GET /v1beta1/options/quotes/latest
• GET /v1beta1/options/trades/latest
• GET /v1beta1/options/snapshots
• GET /v1beta1/options/snapshots/{underlying_symbol}