Typo fixes and corrected "subscribeToAccountStatusSSE" operation ID

Broker API

Corrects spelling errors across the Broker API description. Request and response shapes are unchanged.

• The account status event stream operation ID is now subscribeToAccountStatusSSE (previously misspelled). Generated SDK method names and reference page URLs derived from it change accordingly.
• Fixes wording in descriptions for account activities, the AccountStatusEvent, AdminConfigurations, NonTradeActivity, TradeActivity, and StatusFundingEvent schemas, the fixed income note on CreateOrderRequest, and the Japan entry (JPN_TAX_ID, Kojin Bango) in TaxIdType.

Affected Endpoints

• GET /v1/events/accounts/status
• GET /v1/accounts/activities
• GET /v1/accounts/activities/{activity_type}
• GET /v1/accounts
• POST /v1/accounts
• GET /v1/accounts/{account_id}
• PATCH /v1/accounts/{account_id}
• GET /v1/trading/accounts/{account_id}/account
• POST /v1/trading/accounts/{account_id}/orders
• GET /v2/events/funding/status

Market Data API

Standardizes spelling in the corporate action event schema descriptions used by the corporate actions event stream. No change to event payloads.

Affected Endpoints

• GET /v1beta1/events/corporate-actions