修改src/core/nginx.h，找到

#define NGINX_VER          "nginx/" NGINX_VERSION

改为

#define NGINX_VER          "Nginx/" NGINX_VERSION

修改src/http/ngx_http_header_filter_module.c，找到

static char ngx_http_server_string[] = "Server: nginx" CRLF;

改为

static char ngx_http_server_string[] = "Server: Nginx" CRLF;

修改src/http/ngx_http_special_response.c，找到

<hr><center>nginx</center>

改为

<hr><center>Nginx</center>