DOC Update DummyRegressor.fit docstring to be more precise (scikit-learn#30410)

Co-authored-by: Virgil Chan <[email protected]>

Author: bryant1410

sklearn/dummy.py

@@ -540,7 +540,7 @@ def __init__(self, *, strategy="mean", constant=None, quantile=None):
 
     @_fit_context(prefer_skip_nested_validation=True)
     def fit(self, X, y, sample_weight=None):
-        """Fit the random regressor.
+        """Fit the baseline regressor.
 
         Parameters
         ----------