Strip channel Guild/Channel ID from minId/maxId input

[smatchcube]

Hi,

Copying the message ID from a message (while hovering a message with shift key pressed) copy both the channel ID and the message ID (separated with a '-' character) but the input boxes "After message with ID" and "Before message with ID" take only the user ID.
My little changes allow the user to past directly the input as directly copied to the input boxes without needing to manually strip the channel ID.
I also updated the documentation which was outdated.

Thanks for this useful tool!

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This change is 

[victornpb]

I don’t understand, isn't it easier to just right click instead of shift-right click?

[smatchcube]

Oh I see, the "right click" -> "Copy ID" action is only available with developer mode enabled. My change would allow the function to work even without having developer mode enabled but it's not that important. Feel free to close the issue if you don't want to add this functionality.

[victornpb]

I just never knew this existed😅, because I had developer mode enabled since forever (well I'm a developer😂).

In the last version I added an easier way of selecting messages by just clicking on them. So in most circumstances ou shouldn't need to manually input IDs.

If you still think this would be necessary, please lmk

[smatchcube]

The new way of selecting messages perfectly solves my problem and make it easier for new users (no need to enable developer mode anymore!).
Thank you!