Merge pull request #25 from shenkha/ensembletree-implementation

Small Fix on API Libraries

Author: Eleven1Liu

docs/api/linear.rst

@@ -26,6 +26,8 @@ The simplest usage is::
 
 .. autofunction:: train_tree
 
+.. autofunction:: train_ensemble_tree 
+
 .. autofunction:: predict_values
 
 .. autofunction:: get_topk_labels

libmultilabel/linear/tree.py

@@ -427,6 +427,7 @@ def train_ensemble_tree(
     seed: int = None,
 ) -> EnsembleTreeModel:
     """Trains an ensemble of tree models (Parabel/Bonsai-style).
+    
     Args:
         y (sparse.csr_matrix): A 0/1 matrix with dimensions number of instances * number of classes.
         x (sparse.csr_matrix): A matrix with dimensions number of instances * number of features.