typo fix and shorted preference desc

Co-authored-by: Til <[email protected]>

Author: PurSnake

source/funkin/ui/options/PreferencesMenu.hx

@@ -161,7 +161,7 @@ class PreferencesMenu extends Page<OptionsState.OptionsMenuPageName>
     }, Preferences.debugDisplay);
 
     #if FEATURE_LOST_FOCUS_VOLUME
-    createPrefItemEnum('Focus Volume Mode', 'If enabled, game will recude its volume, when its not focused.',
+    createPrefItemEnum('Focus Volume Mode', 'If enabled, game will reduce its volume when unfocused.',
       ["Delayed" => "Delayed", "Instant" => "Instant", "Off" => "Off"], (key:String, value:String) -> {
         Preferences.lostVolumeFocusMode = value;
       }, Preferences.lostVolumeFocusMode);