Fix doc: option lines

Author: ozh

README.md

@@ -23,7 +23,7 @@ proxies and load balancers.
 ### Core Concept
 
 A new proxy is created by calling `createProxyServer` and passing
-an `options` object as argument ([valid properties are available here](lib/http-proxy.js#L26-L39)) 
+an `options` object as argument ([valid properties are available here](lib/http-proxy.js#L34-L51)) 
 
 ```javascript
 var httpProxy = require('http-proxy');