[elpa] externals-release/org d122c2b5b4 4/4: ox-md: Tweak a defcustom type for compatibility with Emacs<28

[ELPA Syncer]

branch: externals-release/org
commit d122c2b5b41cd0df6431683242e0fa0f4303d863
Author: Kyle Meyer <kyle@kyleam.com>
Commit: Kyle Meyer <kyle@kyleam.com>

    ox-md: Tweak a defcustom type for compatibility with Emacs<28
    
    * lisp/ox-md.el (org-md-toplevel-hlevel): Change the type from natnum
    to integer, which is less accurate but compatible with all Emacs
    versions that Org supports.
    
    This is a follow-up to the recent port of 4b2f5425d.
---
 lisp/ox-md.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/ox-md.el b/lisp/ox-md.el
index 01e0aa0491..dcd95e9871 100644
--- a/lisp/ox-md.el
+++ b/lisp/ox-md.el
@@ -87,7 +87,8 @@ included into another document or application that reserves 
top-level
 headings for its own use."
   :group 'org-export-md
   :package-version '(Org . "9.6")
-  :type 'natnum)
+  ;; Avoid `natnum' because that's not available until Emacs 28.1.
+  :type 'integer)