Update src/extensions/scratch3_pen/index.js
Update src/extensions/scratch3_pen/index.js

Co-Authored-By: apple502j <a1e1a41cf5a37df3fed85a3e730c24cf2c7fcdf3@users.noreply.github.com>
LLK/scratch-vm,LLK/scratch-vm,LLK/scratch-vm