[gnome-text-editor] .gitlab: add note about testing nightly

[Christian Hergert <chergert src gnome org>]

commit b637b2df8f9d04ef8bdf67e6f8e75ee68000cb91
Author: Christian Hergert <chergert redhat com>
Date:   Sun Jun 19 10:34:23 2022 -0700

    .gitlab: add note about testing nightly

 .gitlab/issue_templates/bug.md | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitlab/issue_templates/bug.md b/.gitlab/issue_templates/bug.md
index 481478e..9bbf760 100644
--- a/.gitlab/issue_templates/bug.md
+++ b/.gitlab/issue_templates/bug.md
@@ -10,6 +10,8 @@ Include the contents of About Text Editor->System here to provide us with
 detailed versions of foundational libraries and settings used by your system.
 ```
 
+Have you tested Nightly to see if the issue has been fixed? If not, why?
+
 # Bug information #
 ## Steps to reproduce ##
 - Step by step, how can you make the problem appear?