[docs] Customize and tools docs completed

docs/user/tools/docs.user.tools.todo.md

@@ -1,23 +1,12 @@
 ---
 {
-	"_label": "Assignment and To Do"
+	"_label": "To Do"
 }
 ---
-### Assignment
 
-You can assign any transaction to any user by clicking on the “Assign” button on the right hand column and adding a user.
-
-Step 1: Click on the Assign To Button
-
-Step 2: Add the User and other details
-
-This transaction will appear in:
-
-The To-do list of the user whom this is assigned to in “My List” section
-In the “Assigned by me” section of the user who has assigned this activity.
-
-### To Do
 
 To Do is a simple tool where all the activities assigned to you and assigned by you are listed. You can also add your own to-do items in the list.
 
 
+![To Do](img/to-do.png)
+