docs: add missing vertical line to Collection Upload options table (p…

…ayloadcms#10282)

The missing line doesn't break Github's markdown table row rendering,
but it does break it on the website.

docs/upload/overview.mdx

@@ -97,7 +97,7 @@ _An asterisk denotes that an option is required._
 | **`displayPreview`**           | Enable displaying preview of the uploaded file in Upload fields related to this Collection. Can be locally overridden by `displayPreview` option in Upload field. [More](/docs/fields/upload#config-options).                         |
 | **`externalFileHeaderFilter`** | Accepts existing headers and returns the headers after filtering or modifying.                                                                                                                                                        |
 | **`filesRequiredOnCreate`**    | Mandate file data on creation, default is true.                                                                                                                                                                                       |
-| **`filenameCompoundIndex`**    | Field slugs to use for a compound index instead of the default filename index.
+| **`filenameCompoundIndex`**    | Field slugs to use for a compound index instead of the default filename index. |
 | **`focalPoint`**               | Set to `false` to disable the focal point selection tool in the [Admin Panel](../admin/overview). The focal point selector is only available when `imageSizes` or `resizeOptions` are defined. [More](#crop-and-focal-point-selector) |
 | **`formatOptions`**            | An object with `format` and `options` that are used with the Sharp image library to format the upload file. [More](https://sharp.pixelplumbing.com/api-output#toformat)                                                               |
 | **`handlers`**                 | Array of Request handlers to execute when fetching a file, if a handler returns a Response it will be sent to the client. Otherwise Payload will retrieve and send back the file.                                                     |