DOC: fixed typo in np-indexing.png explaining [-2:] slice in user guide

In User Guide of NumPy in tutorial for absulute beginners, i.e. in
documentation document doc/source/user/absulute_beginners.rst there was
a typo in the image np-indexing.png visualizing slices in **Indexing
and slicing** section. Namely, in the first image in mentioned section,
the last visualized array (under `data[-2:]` command), there was a
picture of `data[:]` or `data[0:3]` (i.e. array([1,2,3])) presenting
the slice indexing. But it should be a picture of of `data[-2:]` (i.e.
array([2,3])). This commit fixes this by adding additional picture of
array([2,3]) under `data[-2:]` command and changing command above last
array([1,2,3]) pic to title named `data` to preserve the idea behind
slice indexing.

1 files changed, 0 insertions, 0 deletions

diff --git a/doc/source/user/images/np_indexing.png b/doc/source/user/images/np_indexing.png
index 4303ec35b..863b2d46f 100644
--- a/doc/source/user/images/np_indexing.png
+++ b/doc/source/user/images/np_indexing.png