chore: shorten preview comment heading in Cloudflare workflow

Author: ayoub3bidi

.github/workflows/preview-cloudflare.yml

@@ -88,7 +88,7 @@ jobs:
             const qrUrl = `https://quickchart.io/qr?size=200&text=${encodeURIComponent(previewUrl)}`;
             const marker = '<!-- cloudflare-preview:bayan-flow-staging -->';
             const body = [
-              '### <span aria-hidden="true">✅</span> Cloudflare Workers preview for *bayan-flow-staging* ready!',
+              '### Preview for *Bayan Flow Staging* ready!',
               '',
               '| Name | Link |',
               '|:-:|------------------------|',