nit: doc fix

Author: techaddict

python/pyspark/ml/wrapper.py

@@ -188,8 +188,9 @@ def copy(self, extra=None):
         """
         Creates a copy of this instance with the same uid and some
         extra params. This implementation first calls Params.copy and
-        then make a copy of the companion Java model with extra params.
-        So both the Python wrapper and the Java model get copied.
+        then make a copy of the companion Java pipeline component with
+        extra params. So both the Python wrapper and the Java model get
+        copied.
 
         :param extra: Extra parameters to copy to the new instance
         :return: Copy of this instance