fix help message
diff --git a/auto/options b/auto/options
index 32328cb..bc9e809 100644
--- a/auto/options
+++ b/auto/options
@@ -312,7 +312,7 @@
--with-http_addition_module enable ngx_http_addition_module
--with-http_xslt_module enable ngx_http_xslt_module
--with-http_image_filter_module enable ngx_http_image_filter_module
- --with-http_geoip_module enable ngx_http_geoip_link_module
+ --with-http_geoip_module enable ngx_http_geoip_module
--with-http_sub_module enable ngx_http_sub_module
--with-http_dav_module enable ngx_http_dav_module
--with-http_flv_module enable ngx_http_flv_module