Explicit command name in DuplicateCommandException message

Created by: Kiritsu

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Summary

As said in D API, when we're debugging and starting the bot, if you have that kind of issue, it will probably just ride up the Exception to the new Program().MainAsync().[...] with the rectangle displaying the Exception message (A command with specified name already exists). For some of us, debugging looks a bit harder because you cannot directly put your mouse on the variable you want to check the value of like a monkey.

Changes proposed

Simply explicitely include the command name in the Exception's message.

Notes

Emzi × Emzi 👑Today at 08:39
how much more direct can it be?

I guess it's a lot more direct!