Bug: Note with custom name are saved without .md extension

[defending1]

Expected behavior:
When a new note with custom name is created, the note filename is created without .md extension
Nor example if I type: notekeeper -n mynote, the file in the notes directory is mynote and I expected to be mynote.md, (it's a minor thing but it breaks the syntax highlighting in the editor).
Current behavior:
~/ note -n mynote
Created new note: /home/laptop/notes/mynote
Opening note: /home/laptop/notes/mynote

~/ note -n mynote.md
Created new note: /home/laptop/notes/mynote.md
Opening note: /home/laptop/notes/mynote.md

If this is wanted I'll close the issue. Thank you