[DoNotDisturbKit] Adjust NSError out parameter

Author: leptos-null

DoNotDisturbKit/DNDToggleManager.h

@@ -5,7 +5,7 @@ API_AVAILABLE(ios(14.0))
 
 + (instancetype)managerForClientIdentifier:(NSString *)identifier;
 
-- (BOOL)_toggleDNDOffReturningError:(NSError *)error;
-- (BOOL)_toggleDNDOnReturningError:(NSError *)error;
+- (BOOL)_toggleDNDOffReturningError:(NSError **)error;
+- (BOOL)_toggleDNDOnReturningError:(NSError **)error;
 
 @end