Fixed a broken link in markdown

README.md

@@ -7,7 +7,7 @@ Currently the project consists of two parts:
 1. `redminer` script itself. For now it supports only creating projects with subprojects
 from a given layout, but in the future it's aimed for various RedMine automation tasks
 2. `RedMiner::API` module, a Perl binding to [RedMine REST API](http://www.redmine.org/projects/redmine/wiki/Rest_api).
-Please refer to [built-in POD documentation](../blob/master/lib/RedMiner/API.pm) for more details
+Please refer to [built-in POD documentation](../master/lib/RedMiner/API.pm) for more details
 
 ## Non-core Dependencies