Fixes typo in README.mdx in exercise 01 (#15)

Author: marufsiddiqui

exercises/01.init/README.mdx

@@ -62,7 +62,7 @@ import { App } from './app.js'
 
 You'll notice we're using `esm.sh` to load the modules. This is a service that
 provides ESM versions of popular libraries. It bundles them on-demand and
-serves them. This works nicely for our build-less setup (thought it does mean
+serves them. This works nicely for our build-less setup (though it does mean
 you need to be connected to the internet to work through this workshop).
 
 - [esm.sh](https://esm.sh)