modified: part1/simple_detector.md

	renamed:    ../../static/z_positioni_part1.png -> ../../static/z_position_part1.png

src/docs/part1/simple_detector.md

@@ -325,7 +325,8 @@ This means it will be fast because it only parses the ID specification string on
 
 The statement above selects for the interior layers number 4 and 5:
 Look at the generated plot in `results`:
-![z_position](../z_position.png)
+
+![z_position](../z_position_part1.png)
 
 ## References