[goffice] go-file: introspection fix.

[Morten Welinder <mortenw src gnome org>]

commit 6940cac6ad5422dfa74ed67252df8c9f8b550845
Author: Morten Welinder <terra gnome org>
Date:   Sun Apr 19 20:56:03 2020 -0400

    go-file: introspection fix.

 goffice/utils/go-file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/goffice/utils/go-file.c b/goffice/utils/go-file.c
index 384dbbe0..03db88cb 100644
--- a/goffice/utils/go-file.c
+++ b/goffice/utils/go-file.c
@@ -1037,7 +1037,7 @@ go_url_encode (gchar const *uri_fragment, int type)
  * go_url_check_extension:
  * @uri: Uri
  * @std_ext: Standard extension for the content type
- * @new_uri: (optional) (nullable): New uri
+ * @new_uri: (out) (optional) (nullable): New uri
  *
  * Modifies given @uri by adding the extension @std_ext if needed.
  * If no @std_ext is given or @uri already has some extension,