fix wasm prettier (RustPython#5055)

Author: youknowone

wasm/demo/src/index.js

@@ -78,9 +78,9 @@ function updateSnippet() {
     // the require here creates a webpack context; it's fine to use it
     // dynamically.
     // https://webpack.js.org/guides/dependency-management/
-    const {
-        default: snippet,
-    } = require(`raw-loader!../snippets/${selected}.py`);
+    const { default: snippet } = require(
+        `raw-loader!../snippets/${selected}.py`,
+    );
 
     editor.setValue(snippet);
     runCodeFromTextarea();