Docs: Add fix for Patcher scoreboard flickering issue (hannibal002#2324)

docs/DISCORD_FAQ.md

@@ -59,8 +59,9 @@ _Frequently Asked Questions_
 > If you are using [Sidebar Mod](https://github.com/Alexdoru/SidebarMod), please remove this mod.
 > If you are using [VanillaHUD](https://modrinth.com/mod/vanillahud), please update to 2.2.8 or newer to resolve this issue.
 > If you are using [Apec](https://github.com/BananaFructa/Apec/) and want to remove their Scoreboard, you need to remove Apec since they don't have an option to disable their Scoreboard.
+> If you are using [Patcher](https://sk1er.club/mods/patcher) or [PolyPatcher](https://modrinth.com/mod/patcher) and the vanilla scoreboard is flickering, disable the "HUD Caching" option.
 > If you don't use any of these mods, make sure the option to "Hide Vanilla Scoreboard" is actually enabled.
 
 
-*This FAQ was last updated on July 1st, 2024.
+*This FAQ was last updated on August 10th, 2024.
 If you believe there's something that should be added to this list, please tell us, so we can add it.*