Will it be good to add notes for different APIs in REAME installation guides?

[raymond0208]

During the installation, I realized some of the APIs in the “OAI_CONFIG_LIST" and "config_api_keys" need to be configured, it would be good to add more notes for people who are not familiar with those APIs

1. In OAI_CONFIG_LIST
OpenAI API - Four use of GPT models in the app, get from https://openai.com/api/

2. In config_api_keys
FINHUB_API_KEY - API for stock, crypto and currencies data, get from https://finnhub.io/
FMP_API_KEY - API for stock, financial statements and historical data, get from https://site.financialmodelingprep.com/
SEC_API_KEY - API for US SEC filing data since 1993, including 10-K filings, get from https://sec-api.io/