Update to @match / Short link undefined

[ColinLabDev]

• eslint: userscripts/better-use-match - Using @include is potentially unsafe and may be obsolete in Manifest v3 in early 2023. Please switch to @match
• https://www.reddit.com/r/example/ copy short link and the output will be https://redd.it/undefined

[PurplProto]

Thanks for raising the issue!

I did know about the undefined issue already, I've just been a little busy recently. But now I know it's affecting others too, I'll find some time to fix it sooner! 😊