fix docs link now that the main repo has moved organisations

Author: ibroadfo

README.md

@@ -85,5 +85,5 @@ If you have customised the location your builds go, we'll pass that on.
 
 If you install the [ember-cli-deploy-revision-data](https://github.com/ember-cli-deploy/ember-cli-deploy-revision-data) plugin, its generated revision key will be used as the deploy message.
 
-[1]: http://ember-cli.github.io/ember-cli-deploy/plugins "Plugin Documentation"
+[1]: http://ember-cli-deploy.github.io/ember-cli-deploy/plugins/ "Plugin Documentation"
 [2]: https://github.com/ember-cli-deploy/ember-cli-deploy-build "ember-cli-deploy-build"