Corrects links.

docs/readme.md

@@ -5,8 +5,8 @@
 [![Moodle Plugin Directory](http://img.shields.io/badge/moodle-plugin-orange.svg)](https://moodle.org/plugins/view/logstore_xapi)
 [![Gitter](https://badges.gitter.im/Join Chat.svg)](https://gitter.im/LearningLocker/learninglocker?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
-- [Installation](docs/installation.md)
-- [Report bugs, enhancements, and questions](contributing.md#issue-templates)
-- [Supported events](docs/events.md)
-- [Developer documentation](docs/developers.md)
-- [Plugin design](docs/design.md)
+- [Installation](installation.md)
+- [Report bugs, enhancements, and questions](../contributing.md#issue-templates)
+- [Supported events](events.md)
+- [Developer documentation](developers.md)
+- [Plugin design](design.md)