Update cloudflare_workers.md (#2414)

Co-authored-by: Jo Franchetti <[email protected]>

Author: iuuukhueeee

examples/tutorials/cloudflare_workers.md

@@ -23,7 +23,7 @@ In order to deploy Deno to Cloudflare, we'll use this community created CLI
 [Install it](https://denoflare.dev/cli/#installation):
 
 ```shell
-deno install --unstable-worker-options --allow-read --allow-net --allow-env --allow-run --name denoflare --force \
+deno install --unstable-worker-options --allow-read --allow-net --global --allow-env --allow-run --name denoflare --force \
 https://raw.githubusercontent.com/skymethod/denoflare/v0.6.0/cli/cli.ts
 ```