Update Cloudflare apt repo keyring reference (#26299)

Author: s0racat

src/content/partials/cloudflare-one/tunnel/cloudflared-debian-install.mdx

@@ -12,7 +12,7 @@ curl -fsSL https://pkg.cloudflare.com/cloudflare-public-v2.gpg | sudo tee /usr/s
 2. Add Cloudflare's apt repo to your apt repositories:
 
 ```sh
-echo "deb [signed-by=/usr/share/keyrings/cloudflare-main.gpg] https://pkg.cloudflare.com/cloudflared any main" | sudo tee /etc/apt/sources.list.d/cloudflared.list
+echo "deb [signed-by=/usr/share/keyrings/cloudflare-public-v2.gpg] https://pkg.cloudflare.com/cloudflared any main" | sudo tee /etc/apt/sources.list.d/cloudflared.list
 ```
 
 3. Update repositories and install cloudflared: