github: change bug reports to search closed issues too

Signed-off-by: Paul Donald <[email protected]>

Author: systemcrash

.github/ISSUE_TEMPLATE/01-bug.yml

@@ -15,7 +15,7 @@ body:
       label: Is there an existing issue for this?
       description: Please search to see if an issue already exists for the bug you encountered.
       options:
-      - label: I have searched the existing issues
+      - label: I have searched among all existing issues (including closed issues)
         required: true
   - type: textarea
     id: screenshots-or-captures