use env for comment topics (#110)

src/utils/bee.ts

@@ -81,7 +81,7 @@ export async function updateFeed(
 // adds "live_x" suffix to the topic if raw is true, so that topics can be versioned if needed
 export function getTopic(topic: string, raw: boolean): string {
   if (raw) {
-    return topic + "live_1";
+    return topic + process.env.ENV;
   }
   const bee = new Bee(process.env.BEE_API_URL || DEFAULT_URL);
   return bee.makeFeedTopic(topic);