Fixed links in contributing.md - CMS style variables seems to be unsupported in .md files
diff --git a/doc/contributing.md b/doc/contributing.md
index e575bb4..f3074a4 100644
--- a/doc/contributing.md
+++ b/doc/contributing.md
@@ -1,7 +1,7 @@
## How to contribute
- 1. Make sure your issue is not all ready in the [Jira issue tracker]()
- 1. If not, create a ticket describing the change you're proposing in the [Jira issue tracker]({% block content %} {{ conf.jira_url }} {% endblock %})
+ 1. Make sure your issue is not all ready in the [Jira issue tracker](http://issues.apache.org/jira/browse/THRIFT)
+ 1. If not, create a ticket describing the change you're proposing in the [Jira issue tracker](http://issues.apache.org/jira/browse/THRIFT)
1. Contribute your patch using one of the two methods below
### Contributing via a patch