Merge branch '2308-improve_QGIS_plugin_documentation' into 'develop'

Add a screenshot of the configuration screen of the OTB plugin

See merge request orfeotoolbox/otb!936

Documentation/Cookbook/rst/QGISInterface.rst

@@ -12,6 +12,8 @@ You can configure OTB for QGIS according to the:
 
 .. image:: Art/plugins.png
 
+.. image:: Art/plugins_config.png
+
 
 Compatibility between QGIS and OTB versions
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