style: align fmt command with check-fmt scope

Update the fmt command to match the file glob pattern used in
check-fmt, limiting formatting to TypeScript and JavaScript files
in src and webpack directories only.

Co-authored-by: llm-git <llm-git@ttll.de>

Author: OttoAllmendinger

packages/webui/package.json

@@ -17,7 +17,7 @@
     "typecheck": "tsc --noEmit",
     "test": "echo \"Error: no test specified\"",
     "dev": "npm run build:wasm && npm run extract-samples && webpack serve --mode development --progress --hot --config ./webpack.config.js",
-    "fmt": "prettier --write .",
+    "fmt": "prettier --write '{src,webpack}/**/*.{tsx,ts,js}'",
     "check-fmt": "prettier --check '{src,webpack}/**/*.{tsx,ts,js}'",
     "clean": "rm -r ./dist",
     "lint": "eslint --quiet .",