fix: improve null check for timeout duration parameter of repel command (#42)

Author: HKayn

src/commands/moderation/repel.ts

@@ -431,7 +431,7 @@ export const repelCommand = createCommand({
 
       const timeout = await handleTimeout({
         target: target,
-        durationInMilliseconds: timeoutHours ? timeoutHours * HOUR : DEFAULT_TIMEOUT_DURATION_MS,
+        durationInMilliseconds: timeoutHours !== null ? timeoutHours * HOUR : DEFAULT_TIMEOUT_DURATION_MS,
       });
 
       const channels = getTextChannels(interaction);