explicit example icon name in test

Author: vld-codra

plotpy/tests/tools/test_get_rectangle_with_svg.py

@@ -23,7 +23,7 @@ class SVGToolExample(RectangularShapeTool):
     """Tool to select a rectangular area and create a pattern from it"""
 
     TITLE = "Pattern selection tool"
-    ICON = "pattern.svg"
+    ICON = "your_icon.svg"
     AVOID_NULL_SHAPE = True
     SVG_FNAME = get_path("svg_tool.svg")