[API guide] Added animate Games Online (AGO) and DMM GAMES receipt verification examples and expanded verification key guidance¶

We are updating the receipt verification guide for the Hive Server Billing API.

Major updates¶

1. Receipt Verification API v4
   • Added guidance to the gameserver_price_verify_key description on comparing and verifying the MARKET PID, amount, and currency; generating a unique verification key for each purchase request; and preventing verification key reuse
   • Added request, request header, and response examples for the animate Games Online (AGO) and DMM GAMES stores
2. Receipt Verification API v1
   • Added guidance to the gameserver_price_verify_key description on generating a unique verification key for each purchase request and preventing verification key reuse
   • Added request, request header, and response examples for the animate Games Online (AGO) and DMM GAMES stores