To get to see the differences between your typed text and the sample provided, you need to have installed 'WinMerge' (
https://winmerge.org) in your system, preferably in the directory which is one level above your AWSP directory. For e.g. suppose "C:\MyFavApps\Word-Speedster-Azhagi's" is your AWSP installation directory. Then, install 'WinMerge' in "C:\MyFavApps\". If done so, while running, AWSP will automatically identify the 'WinMergeU.exe' from that 'WinMerge' installation directory (i.e. "C:\MyFavApps\WinMerge") and use it to generate the 'differences' report and display it to you in your default browser (e.g. Microsoft Edge).
The above is the easiest thing to do. But, if you choose to install 'WinMerge' in some other directory (other than the location recommended above), then, provide the full path name of 'WinMergeU.exe' in "\Atman\I AM\Settings-WordSpeedster.txt" file in AWSP's installation directory. AWSP will use the same.