troubleshooting: ext mem mode fix

hasn't required formatting for a while

_pages/en_US/troubleshooting.txt

@@ -719,7 +719,7 @@ Your console is running Luma3DS 6.6 or older, likely via arm9loaderhax. You shou
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 <summary><u>Extended memory mode games (Pokemon Sun/Moon, Smash, etc.) don't work</u></summary>
 
-This can occur after a CTRTransfer or region change on Old 3DS / 2DS. You will need to system format your console to fix this issue.
+This can occur after a CTRTransfer or region change on Old 3DS / 2DS. Follow the instructions [here](https://3ds.hacks.guide/region-changing#section-vi---fixing-locale-related-issues) to fix this issue (skipping steps 3, 4, 5, and 6).
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