Fix broken links in README

Fixed broken links in Symlinked README.

The issue is caused due to use of relative path which is not followed in the symlinked README.

Closes python-diamond#704

docs/index.md

@@ -3,7 +3,7 @@
 [![Join the chat at https://gitter.im/python-diamond/Diamond](https://badges.gitter.im/python-diamond/Diamond.svg)](https://gitter.im/python-diamond/Diamond?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![Build Status](https://travis-ci.org/python-diamond/Diamond.svg?branch=master)](https://travis-ci.org/python-diamond/Diamond)
 
-Diamond is a python daemon that collects system metrics and publishes them to [Graphite](handlers/GraphiteHandler.md) (and others).
+Diamond is a python daemon that collects system metrics and publishes them to [Graphite](/docs/handlers/GraphiteHandler.md) (and others).
 It is capable of collecting cpu, memory, network, i/o, load and disk metrics.
 Additionally, it features an API for implementing custom collectors for gathering metrics from almost any source.
 
@@ -35,7 +35,7 @@ that any new pull requests and issues be cut against python-diamond. We will kee
 BrightcoveOS updated and still honor issues/tickets cut on that repo.
 
 ## Diamond Related Projects
- * [Related Projects](Related-Projects.md)
+ * [Related Projects](/docs/Related-Projects.md)
 
 ## Contact
  * IRC [#python-diamond](irc://chat.freenode.net:6667/%23python-diamond) on [freenode](http://www.freenode.net). [Webchat](http://webchat.freenode.net/?channels=python-diamond)