Update documentation: remove misleading info on dose_era

[javier-gracia-tabuenca-tuni]

The indication
“Dose Eras will be derived from records in the DRUG_EXPOSURE table and the Dose information from the DRUG_STRENGTH table using a standardized algorithm.”
it is still present in the CDM documentation and is misleading for those looking for the algorithm, because there is no algorithm.

source:
https://forums.ohdsi.org/t/dose-era-builder-code-needs-test-data/660/12?u=javier