efi_loader: fix comments for efi_update_exit_data()

Add missing colons after parameter descriptions.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 2144e35..4f6e8d1 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -3048,9 +3048,9 @@
 /**
  * efi_update_exit_data() - fill exit data parameters of StartImage()
  *
- * @image_obj		image handle
- * @exit_data_size	size of the exit data buffer
- * @exit_data		buffer with data returned by UEFI payload
+ * @image_obj:		image handle
+ * @exit_data_size:	size of the exit data buffer
+ * @exit_data:		buffer with data returned by UEFI payload
  * Return:		status code
  */
 static efi_status_t efi_update_exit_data(struct efi_loaded_image_obj *image_obj,