pcb_klicky/README.md links out of order

whopping_Voron_mods/pcb_klicky/README.md

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           ***TIP!!*** You can use an app on your phone to determine magnet polarity! This is useful in case you make up more probes later and want to make sure they match. [iOS link](https://apps.apple.com/us/app/kj-pole-id/id1323248335) / [Android link](https://play.google.com/store/apps/details?id=air.de.supermagnete.magnetapp&hl=en_US&gl=US&pli=1) (Thanks so much PF!!)

Link for magnet app for android is, unfortunately, throwing out 404 error.