fix deno script

Author: aquapi

bench/routers/README.md

@@ -0,0 +1,11 @@
+To run the benchmark:
+```sh
+# node
+bun start:node
+
+# deno (allowed env and write)
+bun start:deno
+
+# bun
+bun start:bun
+```

bench/routers/package.json

@@ -8,7 +8,7 @@
   },
   "scripts": {
     "start:node": "node --expose-gc index.ts",
-    "start:deno": "deno --v8-flags=--expose-gc --allow-env index.ts",
+    "start:deno": "deno --v8-flags=--expose-gc --allow-env --allow-write index.ts",
     "start:bun": "bun index.ts"
   }
 }