Update README.md

Author: ZerlsDev

README.md

@@ -97,7 +97,8 @@ const attachment = await discordTranscripts.createTranscript(channel, {
       resolveRole: (roleId: string) => Awaitable<Role | null>
     },
     poweredBy: true, // Whether to include the "Powered by discord-html-transcripts" footer
-    hydrate: true // Whether to hydrate the html server-side
+    hydrate: true, // Whether to hydrate the html server-side
+    filter: (message) => true // Filter messages, e.g. (message) => !message.author.bot
 });
 ```