Edit load and save to load, modify and save

doc/tutorials/introduction/load_save_image/load_save_image.rst

 .. _Load_Save_Image:
 
-Load and Save an Image
-***********************
+Load, Modify, and Save an Image
+*******************************
 
 .. note::
 
@@ -15,6 +15,7 @@ Goals
 
 In this tutorial you will learn how to:
 
+* Load an image using :imread:`imread <> `
 * Transform an image from RGB to Grayscale format by using :cvt_color:`cvtColor <>`
 * Save your transformed image in a file on disk (using :imwrite:`imwrite <>`)