Please do not address this issue unless you're part of the sprint (June 6th 2020).

Some docstrings do not link to their objects:

• sklearn.ensemble.StackingRegressor
• sklearn.ensemble.StackingClassifer
• sklearn.ensemble.AdaBoostClassifier
• sklearn.ensemble.AdaBoostRegressor
• sklearn.ensemble.BaggingClassifier
• sklearn.ensemble.BaggingRegressor
• sklearn.linear_model.RANSACRegressor

For example, the docstring in StackingRegressor do not link to the estimators:

This can be linked by setting replacing:

`LogisticRegression`

with:

:class:`~sklearn.linear_model.LogisticRegression`