[Bug] SDK - openbb.econometrics.ols requires dictionary datasets instead of DataFrames

[JerBouma]

Datasets need to be loaded directly into a dictionary to work with ols. Otherwise it returns an error, e.g.

datasets = {"longley": openbb.econometrics.load("longley"), "macrodata": openbb.econometrics.load("macrodata")}

It doesn't work if I do the following:

data = openbb.econometrics.load("longley")
openbb.econometrics.ols(["TOTEMP", "GNPDEFL"], data=data)

Whereas this does: