[chronojump] Export session shows time needed in seconds instead of ms

[Xavier de Blas <xaviblas src gnome org>]

commit b6f4bdf5798e116ae3ee8485c046c9cea67fbca5
Author: Xavier de Blas <xaviblas gmail com>
Date:   Thu Apr 28 17:48:48 2022 +0200

    Export session shows time needed in seconds instead of ms

 src/gui/app1/session/export.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/gui/app1/session/export.cs b/src/gui/app1/session/export.cs
index 39f258b0c..21dbf1616 100644
--- a/src/gui/app1/session/export.cs
+++ b/src/gui/app1/session/export.cs
@@ -153,8 +153,8 @@ public partial class ChronoJumpWindow
                                Catalog.GetString("Cancelled.");
                else
                        app1s_label_export_progress.Text =
-                               string.Format(Catalog.GetString("Exported in {0} ms"),
-                                               app1s_exportElapsedMs);
+                               string.Format(Catalog.GetString("Exported in {0} s"),
+                                               Math.Round(UtilAll.DivideSafe(app1s_exportElapsedMs, 1000.0), 
1));
 
                app1s_export_doing_sensitive_start_end(false);
        }