Using-the-grading-file.md

@@ -137,7 +137,7 @@ The `GradingWorkbookCreator.xlsx` is an excel based tool that is able to **impor
 
 Once you open the file, you are presented with the instructions on how to use it.
 
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+![grading_workbook](uploads/d2a91795b760ddb6f844d18a6f7169e6/grading_workbook.png)
 
 **Please note: The file runs stably using Microsoft Excel. OpenSource alternatives may generate an error.**