docs: Add the change to readme

README.md

@@ -84,6 +84,7 @@ const attachment = await discordTranscripts.createTranscript(channel, {
     returnType: 'attachment', // Valid options: 'buffer' | 'string' | 'attachment' Default: 'attachment' OR use the enum ExportReturnType
     filename: 'transcript.html', // Only valid with returnType is 'attachment'. Name of attachment.
     saveImages: false, // Download all images and include the image data in the HTML (allows viewing the image even after it has been deleted) (! WILL INCREASE FILE SIZE !)
+    exportedText: "Exported {number} message{s}", //Change text at footer, don't forget to put {number} to show how much messages got exported, and {s} for plural
     callbacks: {
       // register custom callbacks for the following:
       resolveChannel: (channelId: string) => Awaitable<Channel | null>,