fix(backend): followedMessageではなくdescriptionになっていたのを修正 (#14908)

packages/backend/src/server/api/endpoints/i/update.ts

@@ -465,7 +465,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			const newName = updates.name === undefined ? user.name : updates.name;
 			const newDescription = profileUpdates.description === undefined ? profile.description : profileUpdates.description;
 			const newFields = profileUpdates.fields === undefined ? profile.fields : profileUpdates.fields;
-			const newFollowedMessage = profileUpdates.description === undefined ? profile.followedMessage : profileUpdates.followedMessage;
+			const newFollowedMessage = profileUpdates.followedMessage === undefined ? profile.followedMessage : profileUpdates.followedMessage;
 
 			if (newName != null) {
 				let hasProhibitedWords = false;