chore: update README.md

plainheart · plainheart · commit 3535b60739b7 · 2023-04-19T20:10:50.000+08:00
diff --git a/README.md b/README.md
@@ -94,6 +94,6 @@ npm run serve
 npm run local
 ```
 
-## License
+# License
 
 MIT &copy; 2021-2023 [plainheart](https://github.com/plainheart).
