Add little excersie block

_includes/image_file_formats/open_diverse_file_formats_bioio.py

@@ -144,7 +144,7 @@
 print(type(bioimage))
 
 # %%
-# lession in between
+# little excersise in between
 # Access image dimensions
 print(bioimage.dims)
 
@@ -174,6 +174,10 @@
 # - Observe that numpy.array shape is 2 dimensional representing y,x
 print(img_2d.shape)
 
+# %%
+# little excercise:
+# paticipants should try to open one of their files with python
+
 # %%
 # Save image as .ome.tif
 # Option 1: directly from the BioImage object