fix: remove typo in changed module message

[Kan18]

This resolves #26 by changing "moudle" to "module".

Were you just planning to fix the typo or reconsider the message/make it more descriptive?

[Lemmmy]

I'm happy to merge this as-is but if you had suggestions for another message?

[Kan18]

Sorry for the confusion - I do not currently have any suggestions for another message, but I was wondering if you did; but after thinking about this for a while, "A module has changed" seems fine

[Lemmmy]

Thanks then!