fix: HTTP parser error in linux installations (#3232)

deployment/nginx_chatwoot.conf

@@ -30,7 +30,7 @@ server {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_http_version 1.1;
-   proxy_set_header Connection “”;
+   proxy_set_header Connection "";
    proxy_buffering off;
    client_max_body_size 0;
    proxy_read_timeout 36000s;