Fix Prettier command

Author: remcohaszing

package.json

@@ -50,7 +50,7 @@
   "scripts": {
     "vscode:prepublish": "npm run build",
     "build": "esbuild extension=src/extension.js remark-language-server --bundle --platform=node --target=node16 --format=cjs --external:vscode --outdir=out --minify",
-    "format": "remark . -qfo && prettier . -w --loglevel warn && xo --fix",
+    "format": "remark . -qfo && prettier . -w --log-level warn && xo --fix",
     "test-api": "node --conditions development test.mjs",
     "test": "npm run build && npm run format && npm run test-api"
   },