[bug] doc for Nginx self-hosted incorrect

[Rjvs]

Is there an existing issue for this?

• [X] I have searched the existing issues

Current Behavior

Includes proxy-pass and grpc-pass in a single entry:

	server {
		listen 0.0.0.0:443 http2 ssl ;
		listen [::0]:443 http2 ssl ;
		server_name $OMNI_DOMAIN ;
		ssl_certificate /var/lib/acme/omni/fullchain.pem;
		ssl_certificate_key /var/lib/acme/omni/key.pem;
		ssl_trusted_certificate /var/lib/acme/omni/chain.pem;
		location / {
			proxy_pass http://127.0.0.1:8080;
			proxy_http_version 1.1;
			proxy_set_header Upgrade $http_upgrade;
			proxy_set_header Connection $connection_upgrade;
			grpc_pass grpc://127.0.0.1:8080;
		}
	}

Expected Behavior

Valid nginx conf

Steps To Reproduce

Read the docs

What browsers are you seeing the problem on?

Firefox, Chrome, Safari

Anything else?

No response