Consultation about investment_site_factors

a) Hello, could I consult you how to use ```investment_site_factors```? I use ```investment_site_factors``` in the following code, but ```TypeError: CellulosicEthanolTEA.__init__() got an unexpected keyword argument 'investment_site_factors'``` will be reported.
```
class TEA(CellulosicEthanolTEA):
_TCI_ratio_cached = 1
def create_tea(sys, OSBL_units=None, cls=None):
if OSBL_units is None: OSBL_units = bst.get_OSBL(sys.cost_units)
try:
BT = tmo.utils.get_instance(OSBL_units, (bst.BoilerTurbogenerator, bst.Boiler))
except:
BT = None
if cls is None: cls = TEA
tea = cls(
system=sys,
IRR=0.10,
duration=(2007, 2037),
depreciation='MACRS7',
income_tax=0.35,
operating_days=0.9*365,
lang_factor=None,
construction_schedule=(0.08, 0.60, 0.32),
startup_months=3,
startup_FOCfrac=1,
startup_salesfrac=0.5,
startup_VOCfrac=0.75,
WC_over_FCI=0.05,
finance_interest=0.08,
finance_years=10,
finance_fraction=0.4,
OSBL_units=OSBL_units,
warehouse=0.04,
site_development=0.09,
additional_piping=0.045,
proratable_costs=0.10,
field_expenses=0.10,
construction=0.20,
contingency=0.10,
other_indirect_costs=0.10,
labor_cost=2.5e6,
labor_burden=0.90,
property_insurance=0.007,
maintenance=0.03,
steam_power_depreciation='MACRS20',
boiler_turbogenerator=BT,
investment_site_factors=0.83)
return tea
```

b) In addition, there seems to be no Chinese ```investment_site_factor``` in the tutorial (https://biosteam.readthedocs.io/en/latest/API/TEA.html#:~:text=investment_site_factors%3A%20dict%5Bstr%2C%20float%5D%20%3D%20%7B%27India%27%3A%200.85%2C%20%27Japan%27%3A%201.15%2C%20%27Mexico%27%3A%200.95%2C%20%27Pacific%20Rim%27%3A%201.0%2C%20%27U.S.%20Gulf%20Coast%27%3A%201.0%2C%20%27U.S.%20Midwest%27%3A%201.15%2C%20%27U.S.%20Northwest%27%3A%201.1%2C%20%27U.S.%20Southwest%27%3A%200.95%2C%20%27U.S.%20West%20Coast%27%3A%201.25%2C%20%27Western%20Europe%27%3A%201.2%7D), it should be ```0.83```, could you please add it to the source code?

Start at the CellulosicEthanolTEA.__init__ entry point and compare its accepted arguments with the investment_site_factors API shown in the linked TEA tutorial. Verify how the country factors are defined, then update the source and tutorial so the keyword and the requested China value are represented consistently.

Written by the indexing model from the issue text.