Fix tag name

packages/file-handling/README.md

@@ -135,7 +135,7 @@ files to a [Nextcloud](https://nextcloud.com/) instance.
     - example `<dbp-file-sink nextcloud-web-dav-url="http://localhost:8081/remote.php/dav/files"></dbp-file-sink>`
     - `nextcloud-auth-url` also needs to be set for the Nextcloud file picker to be active
 - `nextcloud-file-url` (optional): Nextcloud File Url to use with the Nextcloud file picker
-  - example `<dbp-file-source nextcloud-file-url="http://localhost:8081/apps/files/?dir="></dbp-file-source>`
+  - example `<dbp-file-sink nextcloud-file-url="http://localhost:8081/apps/files/?dir="></dbp-file-sink>`
 - `text` (optional): the text that is shown above the button to download the zip file
     - example `<dbp-file-sink text="Download files as ZIP-file"></dbp-file-sink>`
 - `button-label` (optional): the text that is shown on the button to download the zip file