Remove signatures with volatile date defaults

[montezdesousa]

Description

This PR fixes #3386

Test SDK endpoints and respective terminal cmds:

from openbb_terminal.sdk import openbb
openbb.stocks.ba.cnews("AAPL")
openbb.stocks.dps.ftd("AAPL")
openbb.stocks.dps.ftd("AAPL", chart=True)
openbb.crypto.load("ETH")
openbb.stocks.disc.ipo()
openbb.stocks.disc.dividends("2022-08-10")
openbb.stocks.dd.pt("AAPL")
openbb.stocks.load("AAPL")
openbb.stocks.candle("AAPL")
openbb.stocks.ca.hcorr(similar=["AAPL", "MSFT"], start_date="2022-10-01")
openbb.stocks.ca.hist(similar=["AAPL", "MSFT"], start_date="2022-10-01")
openbb.stocks.ca.volume(similar=["AAPL", "MSFT"], start_date="2022-10-01")
openbb.stocks.fa.mktcap(symbol="AAPL", start_date="2022-10-01")
openbb.stocks.ins.act(symbol="AAPL")
oopenbb.stocks.options.pcr(symbol="AAPL")
openbb.stocks.screener.historical(start_date="2022-10-01")
openbb.crypto.candles(openbb.crypto.load("ETH"))
openbb.economy.events()
openbb.economy.macro()
openbb.economy.macro(chart=True)
openbb.economy.treasury()
openbb.economy.treasury(chart=True)
openbb.crypto.dd.close("ETH")
openbb.forex.hist()
openbb.stocks.ba.trend()
openbb.stocks.ba.hist()
openbb.etf.news("SPY")
openbb.crypto.dd.nonzero("ETH")
openbb.crypto.dd.active("ETH")
openbb.crypto.onchain.hr("ETH")
openbb.crypto.dd.eb("ETH")
openbb.crypto.dd.change("ETH")
openbb.crypto.dd.mcapdom("ETH")
openbb.crypto.dd.get_mt()
openbb.crypto.onchain.btc_supply()
openbb.crypto.onchain.btc_transac()
openbb.crypto.ov.altindex()
openbb.crypto.ov.btcrb()
openbb.crypto.ov.btcrb(chart=True)

Changed date arguments and generate SDK website