fix indent in whats_new and fix indent in datasets/base.py (scikit-learn#7138)

Author: nelson-liu

doc/whats_new.rst

@@ -230,8 +230,10 @@ Enhancements
      (`#6846 <https://github.com/scikit-learn/scikit-learn/pull/6846>`_)
      By `Sebastian Säger`_ and `YenChen Lin`_.
 
-   - Added new return type ``(data, target)`` : tuple option to :func:`load_iris` dataset. (`#7049 <https://github.com/scikit-learn/scikit-learn/pull/7049>`_) 
-     By `Manvendra Singh`_ and `Nelson Liu`_.   
+   - Added new return type ``(data, target)`` : tuple option to
+     :func:`load_iris` dataset.
+     (`#7049 <https://github.com/scikit-learn/scikit-learn/pull/7049>`_) by
+     `Manvendra Singh`_.
 
 Bug fixes
 .........
@@ -4317,4 +4319,4 @@ David Huard, Dave Morrill, Ed Schofield, Travis Oliphant, Pearu Peterson.
 
 .. _Manvendra Singh: https://github.com/manu-chroma
 
-.. _Ibraim Ganiev: https://github.com/olologin
+.. _Ibraim Ganiev: https://github.com/olologin

sklearn/datasets/base.py

@@ -260,13 +260,12 @@ def load_iris(return_X_y=False):
 
     Parameters
     ----------
-    
-        .. versionadded:: 0.18
-     
     return_X_y : boolean, default=False.
         If True, returns ``(data, target)`` instead of a Bunch object.
         See below for more information about the `data` and `target` object.
 
+    .. versionadded:: 0.18
+
     Returns
     -------
     data : Bunch
@@ -278,6 +277,8 @@ def load_iris(return_X_y=False):
 
     (data, target) : tuple if ``return_X_y`` is True
 
+    .. versionadded:: 0.18
+
     Examples
     --------
     Let's say you are interested in the samples 10, 25, and 50, and want to