Fix uploadable doc URLs

Resolves #2147

Author: AkenRoberts

doc/uploadable.md

@@ -25,8 +25,8 @@ Content:
 
 ## Setup and autoloading
 
-Read the [documentation](http://github.com/l3pp4rd/DoctrineExtensions/blob/master/doc/annotations.md#em-setup)
-or check the [example code](http://github.com/l3pp4rd/DoctrineExtensions/tree/master/example)
+Read the [documentation](http://github.com/Atlantic18/DoctrineExtensions/blob/v2.4.x/doc/annotations.md#em-setup)
+or check the [example code](http://github.com/Atlantic18/DoctrineExtensions/tree/v2.4.x/example)
 on how to setup and use the extensions in most optimized way.