Merge pull request dipy#3350 from jhlegarreta/FixImageScaleDocWarnings

DOC: Do not use the `scale` option for URL-based images

doc/examples/denoise_patch2self.py

@@ -25,8 +25,8 @@
 The Patch2Self Framework:
 
 .. _patch2self:
-.. figure:: https://github.com/dipy/dipy_data/blob/master/Patch2Self_Framework.PNG?raw=true
-   :scale: 60 %
+.. image:: https://github.com/dipy/dipy_data/blob/master/Patch2Self_Framework.PNG?raw=true
+   :width: 70 %
    :align: center
 
 The above figure demonstrates the working of Patch2Self. The idea is to build

doc/interfaces/denoise_flow.rst

@@ -101,10 +101,8 @@ This command will denoise the diffusion image and save it to the specified
 output directory.
 
 .. |image3| image:: https://github.com/dipy/dipy_data/blob/master/sherbrooke_3shell_original.png?raw=true
-   :scale: 70%
    :align: middle
 .. |image4| image:: https://github.com/dipy/dipy_data/blob/master/sherbrooke_3shell_denoise_MPPCA.png?raw=true
-   :scale: 70%
    :align: middle
 
 +--------------------+--------------------+
@@ -150,10 +148,8 @@ The command will denoise the input diffusion volume and write the result to the
 specified output directory.
 
 .. |image5| image:: https://github.com/dipy/dipy_data/blob/master/cfin_multib_original.png?raw=true
-   :scale: 20%
    :align: middle
 .. |image6| image:: https://github.com/dipy/dipy_data/blob/master/cfin_multib_denoise_NLMEANS.png?raw=true
-   :scale: 20%
    :align: middle
 
 +--------------------+--------------------+