I changed editor from nano to vi

To test

I changed editor from nano to vi
fc92d0e9 · jihee song · 95641643 · fc92d0e9
Commit fc92d0e9 authored 2 years ago by jihee song
--- a/README.md
+++ b/README.md
@@ -19,3 +19,4 @@ int main()
 ```

 * This is **italic**
+* Change Editor